Plants vs. Zombies: Wrath Of Rogue/Game mechanics

The game mechanics serve their own purposes throughout the tower-defense campaign and FPS campaign in Plants vs. Zombies: Wrath Of Rogue. There is an abundance of game mechanics that are seen in gameplay footage, and this is a list containing all of them.
==Backyard Battleground==
The Backyard Battleground is the hub area in Plants vs. Zombies: Wrath Of Rogue. The player will always spawn here, when opening the game (after selecting a save file). This is where a majority of the FPS campaign can be accessed. Ops Mode, the PvP Portal, the Customization Booth, the side-quests, the Stickerbook, the Zen Garden, credits, Crazy Dave's Twiddydinkies, Brain Vendor's Stand, the Docks, the Switch Teams option, the Sticker Shop, and the Stats Room are the available interactive features in the Backyard Battleground.
==Adventure Mode==
Adventure Mode is one of the main focuses of the game, as the player must travel through the PvZ universe in order to stop O'zeightamurrahturrah from unleashing an apocalypse on the entire fabric of space and time (thus obliterating millions of galaxies and parallel universes), if he is not prevented from enacting on this. Adventure Mode is represented in the Backyard Battleground as a globe, and the player can use either a Plant or Zombie Hero (or any variant) to assist the homeowner during the fights against the undead assailants in multiple levels. Worlds and Endless Zones can be accessed here. The tower-defense campaign must be played in order to complete the game, as solely participating in the FPS campaign won't do much in terms of the current save file's percentage.
===Lawn===
The lawn has 45 tiles on its grid, with five lanes and nine columns. Zombies walk from the right side of the screen, requiring the player to use obtainable plants in order to prevent them from eating their brains. Some tiles cannot be planted on, depending on the world's gimmicks, while others are obstructed by grid items (which can be removed by attacking plants). The lawnmowers are the player's last line of defense, which are used when a zombie walks past the first column. Lawnmowers destroy a whole lane of zombies, and cannot be retrieved once they're used up (unless the player is in an Endless Zone level). During the massive attack levels that appear once in each world (which mark the debut of the Gargantuar), the player is prohibited from using lawnmowers.
===Worlds===
Worlds are the locations that the player must travel to. A World Key is required for unlocking these areas, but the player is limited to using three World Keys at a time. One World Key is obtained after beating the Gargantuar battle in every world (excluding the Player's House). Worlds have at least one gimmick that sets them apart from one another. The worlds themselves can have either 25 or 30 levels, and the Endless Zones for each one are unlocked at some point. The difficulty ratings determine how easy or hard the world could be (they can go from one angered Newspaper Zombie head, all the way up to five heads).
The worlds that can be accessed in Plants vs. Zombies: Wrath Of Rogue include the following:
*Player's House
*Ancient Egypt
*Taco Park
*Pirate Seas
*Wild West
*Cautious Construction Site
===Turbo Button===
The Turbo Button can speed up the progression of the current level. The Turbo Button is immediately unlocked after starting Ancient Egypt - Day 1. If a zombie is close to the player's house, it will flash red, as the Turbo Button is automatically disabled. It can be enabled or disabled at any time, and it can be used to set up defenses earlier.
===Objectives===
Also known as Goals, the player is required to complete all objectives in certain levels, as seen on a card at the beginning. The objectives can also be viewed, via the pause menu. The maximum amount of objectives that the player can get is three. If the player fails one or more of the goals, the death screen is different from the normal ones.
===Progress Bar===
The Progress Bar keeps track of the player's level progression. A zombie head moves towards the left, which leaves a green trail behind that fills up the progress. Waves are signaled by the arrival of the world's respective Flag Zombie. The flags appear as checkpoints on the progress bar. The maximum number of flags per level is two (in the Endless Zones, it is extended to three).
==Heroes==
Heroes are the playable characters that are usable in both campaigns. They have access to various abilities. Variants are unique compared to the base characters.
===Hitpoints===
Also known as Health, the heroes have a certain amount of hitpoints. If they lose all of their HP, the player will either be vanquished (in the FPS campaign) or lose the level (in the tower-defense campaign). Health upgrades can be obtained to increase the Hero's total HP. Healing is a way to restore hitpoints. The heart icon that is used for the hitpoints goes through several degrades when the Hero takes damage. When the Hero is at 100% HP, the heart is undamaged. When the Hero is hurt, the heart gains a small light orange bandage, as it starts pulsating. When the Hero is at low health, the heart is encased in a cast, while it's pulsating much faster.
===Primary Weapons===
The player can fire their primary weapons at anything that's in their attack range. The weapon has a limited amount of ammo, before it reloads. Some Heroes or variants do not have ammo (and rely on close-range attacks), while others have infinite ammo that can overheat after using it for too long. Captain Deadbeard and Super Brainz have access to Secondary Weapons, when the player holds the zoom button or key (depending on the game platform). In Adventure Mode, Primary and Secondary Weapons can be used to quickly finish off a zombie that is about to enter the house, if there isn't a lawnmower in that lane. A reticle is present in the middle of the screen (only in the FPS campaign), which is intended for accurately landing shots at an opponent.
===Abilities===
Abilities have different effects on the Heroes, the allies, or the enemies. The Hero has three abilities that they can use. The abilities are categorized as Offense, Defense, or Support (depending on what they're used for). In the tower-defense campaign, abilities replace the Power Ups used in Plants vs. Zombies 2. If the player is about to fail a level, abilities can be used as a last resort against the zombie horde. The player cannot move when playing a tower-defense level, so movement abilities (such as Rocket Jump) are disabled and replaced with an exclusive ability that can only be used there.
===Variants===
Character variants can be obtained by purchasing Sticker Packs or completing an NPC's side-quest. They function differently, in contrast to their regular counterparts. They can use elemental status effects (such as fire, ice, and toxic) against foes or have other unique functions, and may or may not have the same amount of hitpoints as their regular versions. They also have a different set of weapon upgrades that can be obtained from Sticker Packs. Some variants have more than one function. Uncommon, rare and super-rare variants require five sticker pieces to unlock, while the common variants (as in the original ones that the player starts out with) are automatically obtained.
===Reviving===
Heroes can be revived by other players to gain 50% of their maximum health. Power Flowers and their variants can revive players to 100% of their maximum health, instead. The player can also use a Self-Revive card to bring them back to life (only in Ops Mode). In the Backyard Battleground and other game modes, the player has a certain amount of time to wait to be revived (approximately 6 seconds), although they can either click the "Respawn Now" button to revive them to full health instantly (which also refreshes any abilities that were recharging before they were vanquished), or the "Switch Character" to switch to another playable character. If the time to revive a player or AI-controlled teammate in Ops Mode runs out, the deceased character will spectate the rest of the wave until it is completed (afterwards, they will be revived at a distance from the garden or tombstone that they're protecting). Reviving does not work in the tower-defense campaign, as the Hero's death results in the player losing the level.
===Rank system ===
The rank system is used to differentiate newer players from older ones, and vice-versa. The symbol(s) on the player's rankplate changes every 100 ranks, requiring them to level up their playable characters to increase their rank. The symbols on the rankplate come in a large variety of colors and shapes, with some of the shapes resembling the jewels from Bejeweled, another game by PopCap. When new playable characters are added to the game, the rank cap increases. Leveling up the obtainable plants from the tower-defense campaign with XP and Puzzle Piece upgrades does not count towards the rank system, but the player will still get a certain amount of XP for leveling up or upgrading their plants.
===Classes===
The Heroes belong in certain character classes that correspond with their role. Assault classes (Markspea) swarm the enemies (and are usually the easiest characters to play as), Soldier classes (Kernel Corn and Foot Soldier Zombie) will not back down from a fight and will prioritize the bosses before attacking other opponents, Medic classes (Power Flower) heal their allies, Sniper classes (Captain Deadbeard) fend off foes from afar and try to keep bases safe, and Melee classes (Super Brainz) rely on attacking at a close range.
==Shops==
===Crazy Dave's Twiddydinkies ===
The shop found in the plant base. The player can purchase premium plants, upgrades, the Imitater, sprouts, coins, gems, Puzzle Pieces, and bacon (of all things) from the car's trunk. If the player stays at the shop for too long, Crazy Dave will start quoting lines that were reused from PvZ1. If the player purchases bacon, Dave will have a reaction to it.
===Brain Vendor's Stand ===
The shop found in the zombie base. The player can buy the same items from the shop's plant counterpart, except for bacon being replaced with zombucks. If the player stays at the stand for too long, Brain Vendor will look at his serving plate that has brains on it, while he has a bored expression on his face for a few seconds, before he goes back to waiting for the player to buy something from him. Unlike Crazy Dave, Brain Vendor will not have any reactions when you buy something from him.
===Sticker Shop===
The Sticker Shop is available in both bases. The player can use coins to buy Sticker Packs. The items that you can get from Sticker Packs include Potted Plants (referred to as "Grow-a-Pot" in some parts of the game), Build-a-Bot Stations, Spawnables (weeds and zombies), weapon skins, character skins, customization items, weapon upgrades, Team Retry cards, stickers that unlock variants, Puzzle Pieces, Self-Revive cards, and gestures. There isn't a shopkeeper present, when the player enters the Sticker Shop. If the player stays at the Sticker Shop for too long, they will be kicked out of the game (since the player is technically not playing when buying Sticker Packs), although nothing bad happens to their progress in both campaigns when they're kicked out.
==Plant Mechanics==
The obtainable plants in Plants vs. Zombies: Wrath Of Rogue have several mechanics that are exclusive to them.
===Sun===
Sun can be produced by sun-producing plants, received from a tombstone that has a sun icon on it, getting stolen sun back from a Ra Zombie, or using Plant Food on sun-producing plants. The player starts with 50 sun in their bank. Unless conditions apply, sun falls from the sky in daytime levels, falls at a slightly decreased rate in levels that take place indoors, does not fall from the sky in nighttime levels, and falls at half the normal rate in evening levels. Sun is used to put plants on the lawn. The maximum amount of sun that the player can collect is 9900. Some plants do not cost sun, and can be planted for free (such as the Grave Buster).
===Seed packets===
Seed packets describe the the sun cost of a plant that is pictured on the packet itself. After a plant is placed on a tile, it has a recharge for a certain amount of time. Premium plants have a golden border and rainbow background on their seed packets, while the world-obtained plants reuse their seed packet designs from the plants unlocked at the Player's House.
=== Shovel===
The Shovel is used to dig up plants that you don't want on the lawn anymore, or if you made a mistake. The amount of sun that a plant costs will be given back, if it's dug up, unless the plant does not cost any sun. Instant-use plants cannot be shoveled. Shoveling a plant also works in the Zen Garden to replace it with another one, at the cost of removing its Plant Food boost. Unlike the other games, the shovel is immediately available starting from Player's House - Day 1, as opposed to being unlocked in a separate level of that world (but its purpose would be obsolete until later levels).
===Seed Slot===
Seed slots are the amount of plants that you can bring into a level. The player can get upgrades to add more seed slots to have more plants with them.
===Plant Food ===
Plant Food is dropped from zombies that glow green and generate green electricity from their bodies. It is immediately unlocked, after entering Ancient Egypt - Day 1. If the player feeds Plant Food to a selected plant, it will use a special ability that lasts for a few seconds (although it is permanent on some plants until they're destroyed, such as Cactus). If a boost is received from the Zen Garden, then the plant will use its Plant Food ability once every time it is first placed on the lawn. A single Plant Food can be given for free, if the player plants a Power Lily.
==Customizations==
Customizations are collectable items that are used to change the appearance of a playable character. They can be obtained from Sticker Packs, and as rewards from completed side-quests. Most customization items do not have an effect on the gameplay, and are purely cosmetic. Certain customizations might have a conflict of having other item (usually an Accessory or Facial Hair item) being unable to apply onto the character, limiting some combinations. There are hundreds of customizations available, with many of these returning from both games in the Garden Warfare series. The types of customization items include the following: 
*Hats - Items that can be placed on the character's head, just like hats in real life.
*Accessories - Items that cover a certain part of the character's face, such as eyewear and earrings. Unlike the accessories in the Garden Warfare series, up to two accessories can be applied to the character's face. The playable character cannot have two of the same accessories on them, as each one must be different from each other to prevent a conflict from occurring.
*Facial Hair - Exclusive to Zombie Heroes. Facial Hair items mostly consists of beards and mustaches in various styles and colors.
*Organics - Exclusive to Plant Heroes. Depending on what the plant looks like, the organics could be designed to be placed on the hands, neck, or leaf-like feet of the plant's character model.
* Tattoos - Items that add a design to the character's face. Despite the name of this customization type, the tattoos are more comparable to face paint.
**Cape Tattoos - Exclusive to Super Brainz and his variants. Cape Tattoos change the design of the cape that he wears.
*Weapon Skins - Exclusive to Zombie Heroes. Weapon Skins change the paint job of a zombie's weapon. This is not the case for Zombie Heroes that fight physically and do not use a handheld weapon, such as Super Brainz.
*Character Skins - Items that change the entire appearance of the character, with the variants' depiction of the outfit being slightly different. Character Skins are similar to the Costumes from Battle for Neighborville, which also redesign a playable character's model. However, unlike the Costumes, the character skins can give the Hero a beneficial perk that has an effect on the gameplay.
*Gestures - There are two slots in the customization menu for gestures, which allow the playable character to perform a taunt. Unlike other customizations, gestures do not change the Hero's appearance. Gestures can be used to taunt an opponent after vanquishing them, and interact with friends. One of the Hero's gestures is automatically played, when the player wins a level in the tower-defense campaign.
==Leveling system==
The leveling system works similar to the one in the Chinese version of Plants vs. Zombies 2, since Puzzle Pieces are used to upgrade plants. The player doesn't have to upgrade their plants, if they don't want to. This is different from the other leveling system, which is identical to how it works in Garden Warfare 2 (so it is easy to get them mixed up).
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