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Ultimate Weapons, purchased with Stones, offer diverse strategic advantages. Each unlocked weapon has three upgradable stats. After acquiring all 9 Ultimate Weapons, you also gain access to Ultimate Weapon Plus that can be unlocked with additional Stones.
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The cost of a new Ultimate Weapon increases for each acquired at the following rate:
| Number of Ultimate Weapon | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th |
|---|---|---|---|---|---|---|---|---|---|
| Stone costs | 5 | 50 | 150 | 300 | 800 | 1250 | 1750 | 2400 | 3000 |