Bugs and Glitches/Patched

*See also: Unpatched glitches*
The following bugs have been fixed and omitted from Mope.io, and are referred to as **Patched Glitches**.

## Visual

These bugs were only visual, either to the client only or to everyone else.

### Invisible Octopus

If the player was an Octopus and used their ability while in a River, every once and a while they would turn invisible as they held the ability key.

### Miniature Disguise

As an Octopus, if the player held `W` to turn into an object/animal, enters and then exits a whirlpool while still holding the key, they become much smaller. The Island disguise in particular was referred to as a "tiny grain of sand" under this glitch.

The bug returned briefly, affecting only the Island disguise which varied in size, but was promptly patched for good.

### Invisible Animal

If the player held right-mouse click and clicked their animal, they would disappear from their side only.

### No Skin and "Use Low graphics" Hippo design

The Hippo on the No Skins settings and Low graphics appeared to have a green snout, likely resulting from the snout and tail colors being switched.

### Lava Water Bar

For a couple months after its release, the Phoenix's lava bar turned to a water bar in Hiding Holes. Functionally, it still acted as a lava bar nonetheless.

### Incorrect Ability Icon

   In a hiding hole, the player's ability icon would switch to to the one their previous animal has. This did not affect the actual ability.

### No Giant Scorpion Assets

As a Giant Scorpion, sometimes when while using the Special Ability, it would appear as a round red circle body with eyes not connecting to the animal's body. The tail, legs, and pincers would not load at all. After the animation, the player returns to normal.

### Persistent 1v1 Button

It is not certain when this glitch was identified, but upon respawning from death as an apex, the 1v1 invite button would still be on the screen even if the player was no longer an apex. It did not function.

### Incorrect Player Outline After Downgrade

Introduced with the October 14, 2021 "*Version 3 UI*" update, if the player was downgraded from a Black Dragon to a Monster, other Monsters still had the green prey outline around them as though they can be eaten. This was false however, and were treated as normal equivalents.

### Wingless King Dragon

Starting on February 1, 2022, the ultra high-definition King Dragon skin had no wings. This glitch was partially corrected later, but with the Classic skin's wings rather than the Season 2 skin's wings. It finally regained its proper wings circa June 26.

## Mechanism

These bugs were the result of broken, incorrect mechanics, oversights, or leftover/unused content in the game.

### Infinite Coconuts/Bananas Spawn

Sometimes in servers, Banana or Coconuts would spawn rapidly on trees (which were bushes on hills at the time), providing practically infinite sources of both XP and water. When this glitch was active, animals could rise up to over 50M XP.

### Snowball Collisions

Snowballs were pushable under trees and rocks.

### Mole Tailbiting

    If a Mole dug underground with its ability, it could bite animals' Tails regardless of their tier. This bug only lasted for 5 minutes.

### Mole Burrowing

    As Mole, if the player dug between the ground and the Lake, they would burrow inside the Lake. The digging circles were omitted, making it great for tailbite trolling before it was mentioned as fixed on May 13, 2018.

### Snow Roar Spam

    First introduced on November 4, 2017, if the player repeatedly hit `W`, they would shoot snowballs for every use, leading to an excess amount of snowballs and water loss.

### 1v1ing a Snowball

If a Yeti was in its Snowball disguise while going into a 1v1 arena, the Yeti continued to be a Snowball until they released `W`. This also allowed the Yeti to use its ability once in the battle. Yetis were able to use this to their advantage because it was hard to tell where they were facing.

### Ability Radius Increase

    If a Dino Monster tossed a Yeti that was disguised as a snowball through its ability, and the Yeti released `W` while being tossed, the Yeti's freeze radius would be massive due to the size increase.

The Komodo Dragon was also affected by the bug. Its sweat bite range would increase if it was gored by a Bison.

### Charge Instakill

        Similar to the Snow Roar Instakill bug, on only November 2, 2017, if a Rhino, Swordfish, or Muskox hit any animal(including predators, equivalents, and low tier animals) they would kill them in one hit. For the sole day, the 3 animals were a menace, hunting all their predators. This bug was specifically said to be fixed on the following day, November 3, 2017.

### Rapid Ability Usage

In the now-deprecated Sandbox, if the player kept pressing `↑`, `↓`, `Enter`, and `W`, their ability would bug out and cool down much quicker than usual.

### No Crocodile Ability

On January 20th, 2017 Crocodiles had an ability that did nothing. This might've been accidental seeing that other animal's were beginning to obtain their abilities, and the Crocodile simply lacked an ability at the time(it didn't have its signature Bite Drag until January 29, 2017).

### Two Targets with One Spear

At close ranges, if a BigFoot threw its spear when touching another animal, the animal it is touching would be affected by the spear but visually appear to not be impaled, and would continue to fly until hitting another target or vanishing.

### Flamingo Crash

In late February 2021, the Flamingo's ability would cause other player's screens to be blocked and crash if the Flamingo was in their FOV, including the Flamingo themselves sometimes. Many players played Flamingo during this time to troll high tiered players. It was noted as patched on March 4, 2021.

### Macaw Disguise Freeze

Starting somewhere around June 5th 2022, the Blue Macaw would cause other player's screens to turn black and therefore become unplayable if it was seen with a disguise. This bug caused an uptick in the amount of people playing Macaw because it was frequently used to bug high tier players out. It was noted as patched on June 9, 2022.

### Infinite Freeze Glitch

Starting on December 20, 2022 and quickly gaining notoriety for being abused, certain animals(most commonly Wolf and Yeti) could permanently freeze animals with their abilities. This would severely slow them until they took freeze damage from the Arctic. It was noted as patched on December 22, 2022

### White Tiger Cooldown

The date of this bug is unknown, likely starting on February 1, 2022. As a White Tiger, if the player used an auto-clicker and kept spamming their ability, the cooldown would decrease with each usage until it would practically be instant.

### Pterodactyl Climbing Trees

When Ocean Islands were added, if a Pterodactyl landed on an Island (which are usually surrounded in trees, forming a dense canopy), they would land *on* the trees, and fully act as if climbing them. Even stranger, touching any tree trunk afterwards causes the Pterodactyl to automatically climb the tree (and act accordingly), getting off the tree if they walked outside of the canopy but unable to climb/get off with `S`. Normally, the Pterodactyl can't climb trees, and attempting to land on one sets the player under the tree's canopy. Currently, the Pterodactyl can only climb trees if it lands on them with its ability.

### River Current Semi-Immunity

Any animals that are supposed to be immune to the River's current were still affected by the current, albeit not as much as normal, starting on February 1, 2022.

### Mushroom Bush Edible by All

All animals could eat Mushroom Bushes, when they were supposed to be available from tier 6 and above at the time.

### Underwater Eating

    Any animal could eat Mushroom Bushes from underwater. This bug might be related to the above one.

### Worthless Snail

    Snails were bugged and would not give XP around its release.

### Worthless Conch/Mushroom Bush

Mushroom Bushes and Conches would not give XP.

### High Chipmunk XP

    The former AI chipmunks gave abnormally high amounts of XP: A single chipmunk could level up the player to tier 7.

### Mouse Dragon

    Occasionally when Mouse was chosen, the player would go to 3 million XP instantly, which is at tier 15.

### 0 XP on Respawn

Sometimes if the player was killed (which could occur even while still alive) they would spawn at 0 XP instead of the standard 10 at the time or at the normal reduced XP in accordance to their previous XP.

This glitch was patched and later triggered again on chrome if the player was lagging. It has been patched since.

### 1v1 Invite Blinding

    If one Apex Tier set their 1v1 target on another Apex Tier, the other apex's screen would freak out, turning black and then red making them unable to see what is going on.

### Unlimited Bites

    In a corner with 4 people (2 people in the corner), if a player starts to 1v1 a person in the corner, the latter 2 players will get stuck by the arena and will be biteable, making the player's own bite count go up. This bug has been patched by subsequent updates that made the arena walkable and moving the battle if it is too close to a corner.

### Fire Wall Less Damaging

For some time, Land Monster and Phoenix took less damage from the arena's burning effect, likely because they take less damage from fire normally. It was noted and patched on July 21, 2021.

### Wall Canceling No Lava Damage

    If a Black Dragon had no Lava left, it could survive by touching the wall. The fire damage would cancel out the lava suffocation damage.

### Infinite Water Oversight

    Players in an arena had infinite water, and could spit water with no consequences by pressing `S`. This bug allowed the player to spit a consistent stream of water, which could create tremendous amounts of cacti, highlighted in the image to the right.

### Mud Boost

When the player boosted in Mud as an animal immune to mud, they would move extremely fast.

### Cheetah Firebreathing

    As a Cheetah, if the player was on fire and attempted to use their extra boost ability, they would instead shoot fire.

### Lava Toucan Missing Health

If the player upgraded or spawned as a Lava Toucan, they lacked a quarter of their health bar. Lava Toucan has more maximum HP than the other variants do, so it's likely that the player's health was being set to the normal amount instead of the Lava Toucan's buffed amount.

### Skins Acting As Rares

With the release of Skins, certain skins had properties of Rares. In particular, the Woolly Rhino acted like the White Rhino, while Prisma Toucan acted like the Lava Toucan. This particular set of bugs began a controversy that King of Agario created certain bugs and/or delayed fixing bugs on purpose to encourage Mope.io YouTubers to make content on them. Alez debunked this in 2021, stating that the bugs had occurred because the game used to apply rare attributes on animals with Rares if their value was over 0 (since 0 is the normal Animal). The bugs were patched on March 12, 2020.

### No Big Goat

For some time until November 26, 2020, the Big Goat would never appear on the upgrade menu.

### Undefined BigFoot

When the BigFoot appeared on the upgrade menu, it would appear as a gray blob with eyes, not dissimilar to the No Skin animals, and the animal's name would be "undefined". The spears and campfire also ceased to exist when attempted to be thrown/created by a player. It was announced as patched on August 27, 2021.

The palette was #452106. The animal definitions were:

```
 case undefined1:

 infoO.aniName = "undefined";

 infoO.aniDesc = "";

 infoO.upgradeText= 'UPGRADED to ' + infoO.aniName + `! A bug. \n

 Right click/W to throw Spears. \n

 Hold to make a fire (every 30s)`;

 infoO.aniCol = "#452106";

 infoO.skinName = "bigfoot/thebigfoot";

 break;

```

### Invisible Umbrellas

When Umbrellas were first added alongside the other summer items on July 30, 2021, they were invisible in their closed state. Since umbrellas spawn closed, this made it impossible to tell where umbrellas were and frequently caused players to randomly pick up umbrellas out of the blue. Their closed state was finally made visible on October 3rd, 2021.

### Objects moving 1v1 Animals

    The most infamous July 30th 2022 (Summer Update) bug, umbrellas, floaters, and beachballs could move Animals in a 1v1 around. This glitch was noted and patched on August 27, 2021.

#### Possessed Umbrella

Originally introduced on July 30, 2021, if a player equipped an umbrella and immediately dropped it in some way (such as stun), attempting to pick the umbrella up afterwards caused it to strangely push the animal against it. Being bit by a Venus Fly Trap often triggered this bug. This was likely a result of the game trying to place the umbrella in a certain position from the player. It was "patched" when Umbrellas and the rest of the summer items were discreetly removed on October 27, 2021, but the bug returned with the July 12th 2022 update when the summer items were re-added. Since summer items have been removed, the bug is "patched" again.

### Debug values shown

For some time starting in July 2021, the variables "wallLimit" and "Dist" were able to be seen in 1v1s and Redemption. They were likely accidentally left active in the code. They were noted and hidden on August 27, 2021.

### Paris1 Dev Server

After the December 20, 2022 update, Paris1 was accidentally left as a developer server for several hours. This caused several strange quirks to occur.

1. There was no visible leaderboard shown, although it still existed in the code.
2. Joining the game brought up the usual tier 1 Upgrade Menu, but instead of being the animal chosen, the player would always be a Camel.
3. Upgrading would show all animals possible, including Rares, for the tier.
4. The server was full of developer bots, all with the same name starting with [KOA]. Unlike regular bots, they would use their abilities. Since each bot was a space in the server, the server's player count was frequently at 190-200.
5. Most animals had no ability cooldown.
6. Toucans would always throw coconuts from fruit spawns.

The server was acknowledged by KoA and left open for a couple more hours since players could not gain coins on Paris1 and therefore was not abusable. Paris1 closed sometime between 8 and 9 pm Pacific Standard Time and reopened as a regular server.

### Igloo Coin duplication

If an Ice Monster shot an ice crystal as the finishing blow at an animal with a coin bounty right as they exited an Igloo, the Ice Monster would gain double the coins they would usually (for example, Bigfoot gives 600 instead of 300). This bug was little known: Some of the few knowledgeable players used this bug to coin farm until it was patched at an unknown date.

### Coin Tornado

Tornadoes had the ability to pick up mopecoins. Food is duplicated in a tornado, including mopecoins, causing a few collected mopecoins to become several that duplicate themselves further to become dozens. Entering a tornado filled with coins or a recently despawned one can give over 60 coins, making it very easy to farm coins. It was noted and patched on December 1, 2020: Tornadoes could no longer duplicate mopecoins, although they could pick and move them.

### Adblocker Coins

Starting in the "*Mope 4.4.1 Performance & Optimization Build*" update on May 27, 2022, players gained coins while playing with an adblocker, although players aren't supposed to. It was patched some unknown days later.

### Stuck W and Right Click

Similar to the Tab bug and introduced on February 1, 2022, the `W` key sometimes got stuck upon upgrading, causing the player to be unable to use their ability and dive immediately in water. Right clicking was also affected, causing the player to run endlessly. This bug was fixed sometime before June 2022, possibly in April or May.

### Deals not working

Golden skins and Locked skins bought through their respective Deals couldn't be used in-game starting on February 1, 2022. Individually bought skins still worked. This was patched sometime in May, probably in the May 27 changes.

### Non-edible Watermelons

Starting on May 27, 2022 sometimes watermelons and slices created by lava spots spawned during a volcanic eruption lack a hitbox and can't ever be eaten. This was fixed some days later.

### Unlimited Lava

Introduced on May 11, 2022, if a Phoenix or Land Monster won a 1v1, they had infinite lava and therefore could spam the `S` to spit infinite fireballs. Since their fireballs are damaging on contact (besides burn damage), they could decimate other animals' health in an instant. King of Agario noted and "patched" the bug, but it wasn't fully patched until some days later.

### Extreme Water Loss while Flying

    Introduced on June 9, 2022, fly-boosting with any animal capable of true flight drained water so quickly they would be damaged by dehydration after just a couple seconds. This water loss was quickly noted by the community and reduced to a more adequate amount 1-3 days later.

### Apex List Not Showing

Throughout time since the King Dragon was added, the apex list fails to appear on-screen when `S` is pressed. The latest iteration of this started on June 23, 2022 and was fixed with the August 29, 2022 update.

## Beta

The following bugs were only seen in Beta.

### Flytrap Sizes

    In an iteration of Beta, flytraps could either generate incredibly large or small. The largest flytraps were so large, they covered the whole map and made the game unplayable.

### Turbo Bees

Honey Bees flew at extremely fast speeds when attempting to sting an animal, so fast that they disappeared from the screen in a blur if they missed. They keep this speed until they returned to their hive.

### Tier 14 UI glitch

When evolving to tier 14, the upgrade screen wouldn't show at all. This made the player unable to chat or use the tier 13 (`W` still made the player dive in water). This would also let the player unable to choose skins, Cassowary and Giant Spider, as it would always prioritize animals without the skin in the biome the Tier 13 animal belonged (Arctic: Mammoth | Desert: Blackwidow Spider | Ocean: Blue Whale | Land: Elephant). By modifying the game, this bug was shown as actually intentional because the Smile Spider Giant Spider skin would cause the game to freak out if loaded on the Upgrade Menu.

### Infinite Water

In the May 2022 beta, animals had infinite water that didn't drain over time. It only drained if the player boosted. This bug was patched in an unannounced update within the month.

### Lava Animals Unable To Regain Lava

Circa May 2022, a glitch on both Beta and live Mope (proof needed) was created in which lava animals were unable to refill their lava bars whatsoever.

## Footnotes

### References

1. ↑ https://discord.com/channels/508469597209362433/624704773169479735/815733690499465237 (screenshot)
2. ↑ https://discord.com/channels/508469597209362433/624703802838351892/974390822982283325 (screenshot)