Takara

Screenshots

Problem Statement

In a land, a farmer grows carrots. All the farm plots have carrots, except one which has Takara the radish and you have to find it!Players deposit 100 DAI to get a ticket and participate to the game. These DAI are deposited in Dai Savings Rate module to generate yield. If a player has a ticket he can try to find Takara the radish in farm plots. He has one chance every day and each day Takara location changes. If a player finds Takara, he wins the yield generated by the deposit of all players from the last time someone won.When a player wants to stop the game, he can just return his ticket and get his 100 DAI back.Takara is inspired by Pool Together, a lottery without loser. The concept behind Pool Together is for participants to lock a deposit into an Aave pool that will generate interests. Those interests are distributed to the winners of the lottery.Takara brings several improvements to this no loss game:We use sDAI and Spark to generate a fixed yield : 5%Each participant can buy only one 100 DAI ticket, same chance for everyoneEach particpant has one chance everyday, if there is no winner, the prize is kept for the next daysYou have to find the plot with the radish everyday, it is not a lottery, your choice impacts the result.

Solution

This project is based on yield generated by sDAI. All player deposits are grouped in a common pot and the winner earns all the interests. We use Chainlink VRF to generate a random number for the winning plot and Chainlink Automation to update the game everyday (create a new random number and reset players turn). A different random number is generated for each player to avoid the exchange of information between players. We use Tableland for game database and push protocol for game notifications