Tron Worlds is idle economic strategy game. Buy production units and get paid back every hour, up to 108% per month. You can withdraw a half of the profit and reinvest other half. Bring your friends and earn 5% of all their purchases. When one of the players withdraw more money that contract balance has, Doomsday starts. The game will be halted for 24 hours, all units and players balances will be destroyed and the game will start again. But all referral information will stay intact. The game contract is written with the possibility to extend features without compromising security of players funds. It will be possible in the future to spend in-game balances for buying and training military units instead of spending anything on production, this will significantly delay Doomsday. Contract is verified.