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There are 8 different types of island upgrades. Each provides the player with some sort of improvement to their islands. Upgrades can be purchased with in-game currency and are a great way to keep your players leveling up. There are 5 different island types for players to choose from, these being the normal, snow, desert, swamp, and the challenge island. The challenge island consists of parkour that players must complete prior to starting their island, but receive a better starting chest for their island after completion. 
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Minions can be purchased in the shop. These minions are all upgradeable up to level 5 which increases things like the amount of loot they generate to the speed that they generate loot at.
Seller – Sells items in a linked chest.Fisher – Fishes in a nearby pond for the playersMiner – Mines blocks directly ahead of a userBreeder – Breeds nearby animalsSlayer – Kills anything nearby, including players.