It looks like it's some kind of alternative to SMT project which won't come out for months. STEEM Monsters are going to use it: https://steemit.com/steemmonsters/@steemmonsters/steem-monsters-automated-tournaments-now-in-testing So it must be a loegit project with real development. If one of the biggest DAPPs is on board, then I'm all in when it comes to trusting the project. You can try the DAPP here. I play it every day for the Daily Rewards and Steem-engine will only make things better :)