Treasure Under Sea (TUS) is the in-game cryptocurrency of a play-to-earn game called Crabada. Crabada is a game based on the undersea world and is filled with fighting hermit crabs called Crabada. Such Crabada can be bred and utilized for earning cryptocurrencies with the original value. TUS is one of three tokens of the Crabada game, which can be earned by minting, looting, and lending Crabada (CRA), a token of the Crabada game. 

The whitepaper of Crabada states that the game is completely decentralized. The team of Crabada aims to provide the players with complete control of their assets. This is ensured by making the Crabada game blockchain-based. Additionally, the gameplay interactions of Crabada are processed and stored on-chain, which enhances transparency. 

Apart from TUS, there are two other tokens of Crabada: Crabada (CRA) and Crabada Amulet (CRAM). CRA is a governance token of the Crabada game and is rewarded through staking. CRAM is an amulet that players earn through staking CRA. CRAM is aimed to be utilized for in-game benefits and gaining exclusive rewards. 

The official website of Crabada states that the game is based on four concepts: mining, looting, breeding, and battles. Crabada enables the players to gather and mine valuable treasures to thrive. Looting helps the players raid other players and claim their share of the treasure. Breeding enables the players to grow their game characters among sixty-four breed types available on the platform. Battle helps players to gain new in-game land and resources.  

Crabada was co-founded by Oxtender, an expert in product management and blockchain products. Jay is also a co-founder of Crabada, a product designer and product development. The ICO of TUS was initiated on November 13, 2021 at $0.002.