Battle Arena/Guide to SI Bonus Rocks

Up to date until Version = 1828

## TLDR

**TL;DR:** To max your chance of getting SI Bonus Rocks while mining, your drop rate multiplied by your SC1 bestiary bonus drop rate should be above 1900%. To get SI greens, I recommend running Secret Dungeon with 667% epic rate (or as close to that as you can get) and high drop rate (anything above 3334% works).

## Intro

SI Bonus Rocks stand for Special Infinite Bonus Rocks, and are Bonus Rocks which can be used infinite times on any item, even finalized items and those tagged with “Cannot apply Bonus Rocks”. The only exceptions to this are some accessories – most medals and crafted gems cannot have their bonuses changed. So SI Bonus Rocks allow you to change bonuses on your finalized gear without depending on S rocks from Pixelated Mystery Boxes to change its bonuses.

Bonus Rocks come in three kinds: A (green), B (orange) and C (purple). See this Bonuses Guide for more info on how these bonuses are applied.

The bonuses for Bonus Rocks can be changed in the machine in the Abandoned Lab, which is why some people try to get only one of each kind of SI Bonus Rock. Personally, I hate wasting time with the machine, so I like having many. It is useful to have many during rebirths, because you cannot access the Abandoned Lab until rank 180.

Here’s a screenshot with all kinds of SI Bonus Rocks: green, orange and purple; weapons (top row), armor (middle row) and accessory (bottom row). Note the yellow infinite symbol, which means it can be used infinite times on almost all items.

## Drop Info

SI Bonus Rocks drop only from level 9001 enemies when Hardcore and Apocalypse mode are active. In this mode, every time a level 9001 enemy drops a Bonus Rock it has a 1% chance to be an SI Bonus Rock. Bonus Rock drops work as listed here.

* There’s a 0.0005\*dropRate% chance of a drop occurring:
	+ If the enemy is a Boss: 20% chance of getting a Finalizer.
	+ If no Finalizer/Bonus Rock has dropped yet and the enemy is both rare and a boss, 40% chance of getting a C (purple) Rock.
	+ If no Finalizer/Bonus Rock has dropped yet and the enemy is epic, 80% chance of getting an A (green) Rock. (Note: Epic monsters are always rare as well.)
	+ If no Finalizer/Bonus Rock has dropped yet and the enemy is rare, you get a B (orange) Rock.

Here dropRate is your Drop Rate after various multipliers. See the awesome Drop Mechanics Guide for more info.

Note: Drop Rate is very easy to get in Apocalypse Mode, because it gets multiplied by 2.08. Here is a list of Drop Rate sources, so you can get that number high easily:

* Item Maker Career
* Drop Rate from Armor Set (crystal set works great for this reason)
* Green Bonuses on your Equipment
* Five-Leaf Clover Skill
* Luck Ring
* Buff (Nightmare, Reward and Loot Magnet buffs all give drop rate)
* 1.5x/2x Drop Rate Events

## Mining SI Rocks

Mining in Hardcore Apocalypse mode is not easy, as your stats get heavily nerfed. Consider waiting until level 8999, so your hit chance penalty is only 5% (from WM). Since you are mining for SI Bonus Rocks, you can filter out Finalizers and other Bonus Rocks by adding these items to your Item Filter:

```
Weapon Bonus*,Armor Bonus*,Accessory Bonus*,[S] Weapon Bonus*,[S] Armor Bonus*,[S] Accessory Bonus*,[I] Weapon Bonus*,[I] Armor Bonus*,[I] Accessory Bonus*,

```

To ignore Finalizers, you can use the following list or use an "Ignore Finalizers" bonus on one of your accessories:

```
Weapon Finalizer*,Armor Finalizer*,

```

If you want to ignore a specific kind of SI rock, you can also do so by adding it from this list:

```
[S] [I] Weapon Bonus: Type A,[S] [I] Weapon Bonus: Type B,[S] [I] Weapon Bonus: Type C,[S] [I] Armor Bonus: Type A,[S] [I] Armor Bonus: Type B,[S] [I] Armor Bonus: Type C,[S] [I] Accessory Bonus: Type A,[S] [I] Accessory Bonus: Type B,[S] [I] Accessory Bonus: Type C

```

After Auto Fight speed got buffed in version 1665, idle mining without suiciding is now easily doable in Hardcore Apocalypse mode. For this, it is important hit 95% double hit chance and 95% critical chance. Use (or craft) armor with a high speed bonus to hit 95% double hit chance, Pink Crystal armor enhanced with speed rocks are a good choice. To hit 95% critical chance, use accuracy as a purple bonus on your gear until you hit it. For a slight damage increase, you can use critical damage for orange bonuses. 4 finalized pink crystal set pieces fully enhanced with speed rocks and a finalized unobtainium pickaxe are enough to hit 95% double hit in apocalypse mode, if you also use all of the attack speed skills.

Since Secret Crystal 1 is always a rare boss, it can drop orange Bonus Rocks, purple Bonus Rocks and Finalizers. the following table shows what drop rate you need to ensure a Bonus Rock or a Finalizer drops from Secret Crystal 1:

 4
 5
 6

With a drop rate above that, Secret Crystal 1 has:

* 20% chance of dropping a Finalizer.
* 32% chance of dropping a C (purple) Bonus Rock.
* 48% chance of dropping a B (orange) Bonus Rock.

Secret Crystal 2 will pretty much always drop a Bonus Rock/Finalizer (unless you’re suicide mining with a really low drop rate). It has a

* 20% chance of dropping a Finalizer.
* 32% chance of dropping a C (purple) Bonus Rock.
* 38.4% chance of dropping an A (green) Bonus Rock.
* 9.6% chance of dropping a B (orange) Bonus Rock.

Because Secret Crystal 2 will only spawn 14% of the time, it’s hardest to get green Bonus Rocks while mining. On average, for every green Bonus Rock you will get approximately 6 purple and 8 orange Bonus Rocks. That’s why I recommend running Secret Dungeon to get more green Bonus Rocks once you have enough purple and orange Bonus Rocks.

If you cannot completely kill the Secret Crystals, set your revive skill to 30, so you revive on the spot and get the drops anyways. In that case, your drop rate gets lowered by how much of the monster you killed, with a minimum of 0.2. For example, if you killed half its hp, your drop rate gets multiplied by 0.5, so you will need a higher drop rate to ensure a Bonus Rock/Finalizer drops.

## Secret Dungeon

Secret Dungeon is also a great source for SI Bonus Rocks. In Hardcore Apocalypse mode, every enemy will be level 9001 and rare, with a base 15% chance of being epic. (You can see this kind of information in this guide.) With such high rare and epic rate, and because you can easily choose to fight bosses or non-bosses after opening a few chests, this place is perfect to find specific SI rocks.

To get green SI Bonus Rocks, I recommend going into the Secret Dungeon and killing epic non-boss monsters. Why? Because green Bonus Rocks only drop from level 9001 monsters, and if they are not bosses it assures you the drop will neither be a Finalizer nor a purple Bonus Rock. Since the epic chance here is a huge 15%, once you reach 667% epic monster rate every non-evolving monster will be epic. If you combine that with 3334% drop rate, which is the minimum to ensure a Bonus Rock drop in this case, you get a 0.8% chance of an SI green Bonus Rock for every non-evolving non-boss monster you kill and a 0.2% chance of an SI orange Bonus Rock as a side-effect. You can ensure a Bonus Rock drop with less Drop Rate if your Bestiary Level for the monster is 4 or higher.

By the time you hit rank 500, bestiary levels in Secret Dungeon are probably 3 or less and it is rather hard to hit 3334% drop rate at that point. Here’s what I recommend to at least get close:

* Purple Armor of Loot (+1000% drop rate). Enhanced with Critical Damage or Speed Rocks. I went full Critical Damage so the set would still be useful outside of Apocalypse mode, but if you have spare parts you could enhance some with Speed Rocks.
* Luck Ring (+100% drop rate, +100% Epic Monster Rate).
* Loot Magnet Buff (+75% drop rate, +75% Epic Monster Rate if you max the Buff Boost skill).
* Activate Item Maker Career (+Career level% drop rate).
* Use the Five-Leaf Clover skill (+150% drop rate, +150% epic rate).
* Set some green bonuses to Epic Rate and Drop rate. Epic rate is more efficient if you have not hit 667% yet. If you already have 667% epic monster rate and 3334% drop rate, you’re set. I know you do not have green SI rocks yet, but you can get green S rocks from Pixelated Mystery Boxes.
* Be at least level 8999, as your your hit chance penalty goes down from 15% to 5%.
* Hit 95% double hit and 95% critical chance and a good accuracy by using some accuracy purple and orange bonuses.
* You might have trouble against bosses, so just menu out of the Secret Dungeon if you encounter one. Turn-based mode makes this easier. If you can kill them, do it for a chance of u7 ultimate weapons (about 21.6% chance from an epic boss if you have 3334% Drop Rate).
* Use your best weapon. (The recommended weapon that people suggest you should have when you reach r500 should work just fine.)

To get orange Bonus Rocks instead of greens, set 100% epic rate and Bestiary level bonus\*Drop Rate>=6667. You will get one orange Bonus Rock for every non-boss non-evolving non-epic monster you kill.

If you want purple Bonus Rocks, the same reasoning applies for Secret Dungeon’s bosses. Because bosses get a higher multiplier to their drop rate, Bestiary level bonus\*Drop Rate>=6154 ensures a Finalizer/Bonus Rock drops.

## Credits

Written by Vonbo on the Kongregate Forum Credits to Uroogla for information and generally being helpful/awesome, darkness5724 and crazye97 for their oh-so-awesome Drop Mechanics Guides