The game is called Shoot Your Friends. It's a death match couch game for 2-4 players who share a screen and pilot tanks around an arena.
Please be aware that it is somewhat niche, it's only compatible with controllers and local multiplayer. But if you ever get the gang over for game night it can be a fun way to spend the evening.
I don't use a controller, but I bought two copies for friends that do! Keep going, make more games, add features! (Like maybe keyboard controls for us dinosaurs.)
Revenue divided by time is a depressing metric for anyone who starts trying to monetize their hobby, but that's not the point. Do your fun project because it's fun. If you make enough to cash out on Steam, get yourselves some actual trophies. Or pizza. Trying to make money will force you to do all the depressing capitalist things the big studios do, and then it's not fun anymore.