CRA is a governance token which is rewarded via staking, and playing the game during the incentive period.
Before the launch of the Idle game, CRA can be initially obtained through a Community Bootstrap Event, or via DEX after the Community Bootstrap Event.
TUS (Treasure Under Sea)
TUS is the in-game currency earned via playing the game in the form of Mining, Looting and Lending Crabs via the Tavern.
TUS can be earned through gameplay, or bought via DEX.