From Brotato Wiki
Shop
The shop will offer 4 random items. These items will depend on your character, Luck, number of waves progressed and if you have chosen to lock it. Each item has a cost depending on its rarity and their base value. You can purchase unique items once.
Mechanics
Rolling
Rolling is done buy refreshing your shop for a certain amount of currency. This amount gets increased as you roll. Dangerous Bunny will allow you to have +1 roll for free each round this effect stacks.
Locking
You can lock as many items as you can which ensures your next shop will keep those items of your choice. This is very useful when you are going for certain stats. This action does not cost money.
Combining
You can combine weapons by having two of the same weapon equipped. This will combine them freeing up a weapon slot and upgrading the item to a higher rarity. Also, if you have filled your weapon slots and buy an exact rarity of an item you wield that is not legendary the item will automatically combine making it a higher tier.
Recycling
You can recycle your weapons for a portion of its purchased price. This will remove the item and will grant you the amount. Recycling Machine will increase this amount by 35%.
Rarity of Shop Items and Luck
| Min Wave | Base Chance | +Chance per Wave | Max Chance | |
|---|---|---|---|---|
| Tier 1 | 1 | 100% | 0% | 100% |
| Tier 2 | 1 | 0% | 6% | 60% |
| Tier 3 | 3 | 0% | 2% | 25% |
| Tier 4 | 7 | 0% | 0.23% | 8% |
Calculation for chances are done by:
= ((Chance per Wave * (Current Wave - Min Wave)) + Base Chance) * (100%+Luck)
Chance per wave starts adding chance after the Min Wave.
This value cannot exceed Max Chance.
Luck increases these chances by x%, but that still cannot exceed Max Chance.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tier 1 | 100% | 94% | 88% | 80% | 72% | 64% | 56% | 47.77% | 39.54% | 31.31% | 23.08% | 20.85% | 18.62% | 16.39% | 14.16% | 12.93% | 12.7% | 12.47% | 12.24% |
| Tier 2 | 0% | 6% | 12% | 18% | 24% | 30% | 36% | 42% | 48% | 52% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% |
| Tier 3 | 0% | 0% | 0% | 2% | 4% | 6% | 8% | 10% | 12% | 14% | 16% | 18% | 20% | 22% | 24% | 25% | 25% | 25% | 25% |
| Tier 4 | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0.23% | 0.46% | 0.69% | 0.92% | 1.15% | 1.38% | 1.61% | 1.84% | 2.07% | 2.3% | 2.53% | 2.76% |
For example:
- In wave 10, chance for Tier 3 is 2*7 = 14%
- If the player has 100 Luck it increases by 100%, 14*2 = 28%
- However, Max Chance for Tier 3 is 25%
- Therefore, Chance for Tier 3 ends up as 25%
Rarities with 50 Luck :
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tier 1 | 100.0% | 91.0% | 82.0% | 70.0% | 58.0% | 46.0% | 34.0% | 24.66% | 21.31% | 17.96% | 14.62% | 13.28% | 12.93% | 12.59% | 12.24% | 11.89% | 11.55% | 11.21% | 10.86% |
| Tier 2 | 0.0% | 9.0% | 18.0% | 27.0% | 36.0% | 45.0% | 54.0% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% |
| Tier 3 | 0.0% | 0.0% | 0.0% | 3.0% | 6.0% | 9.0% | 12.0% | 15.0% | 18.0% | 21.0% | 24.0% | 25% | 25% | 25% | 25% | 25% | 25% | 25% | 25% |
| Tier 4 | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.35% | 0.69% | 1.04% | 1.38% | 1.73% | 2.07% | 2.42% | 2.76% | 3.11% | 3.45% | 3.8% | 4.14% |
Rarities with 100 Luck :
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tier 1 | 100% | 88% | 76% | 60% | 44% | 28% | 24% | 19.54% | 15.08% | 13.62% | 13.16% | 12.7% | 12.24% | 11.78% | 11.32% | 10.86% | 10.4% | 9.94% | 9.48% |
| Tier 2 | 0% | 12% | 24% | 36% | 48% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% | 60% |
| Tier 3 | 0% | 0% | 0% | 4% | 8% | 12% | 16% | 20% | 24% | 25% | 25% | 25% | 25% | 25% | 25% | 25% | 25% | 25% | 25% |
| Tier 4 | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0.46% | 0.92% | 1.38% | 1.84% | 2.3% | 2.76% | 3.22% | 3.68% | 4.14% | 4.6% | 5.06% | 5.52% |
Modifiers
Items
Coupon is the only item that will reduce your shop price by 5%.
Waves
As you progress more in game you will start getting offered better items. This is like a passive version of Luck but it is not certain it works like it.
Character Specific
Bull is the only character that will not get offered a weapon since it cannot use weapons. It will only get offered items.
Demon is a unique character that buys items with Max HP.
Entrepreneur has -30% Items Price buff.
Saver has +50% Items Price debuff.
Item Chances
There are 2 mechanics that can affect the items and weapons available:
Current Weapon Set
- Holding a weapon that belongs to a set will make other weapons in that set more likely to appear.
- This can be helpful, as it helps you complete sets to gain set bonuses and multiple find copies of the same weapon.
- It can also be detrimental, as holding weapons with multiple types can dilute a shop's pool.
- Eg. if you have a ranged character holding a Medical Gun, you may not want the other Medical weapons as they are both Melee.
Item Tags
Most items are have item tags, which group them by related properties (eg. Less Enemies groups items that reduce enemy spawn counts). Certain characters have a higher chance of finding items with that tag.