Adept Octowhirl is a great little idle game with some incredible art! Only has 12 reviews as of writing this, it definitely deserves more.
Closed Eyes has impressive visuals, a really interesting core mechanic, and a great hook for its story. It's not technically finished, but if you don't mind a cliffhanger it's a lot of fun in its current state. It's at 10 reviews now, definitely needs more.
Penny Farthing is the funniest game I've found so far. The gameplay is solid too. It has 18 reviews currently.
Spinski is a fun little skiing arcade game. There's a bunch of routes so it's decently replayable too. It's at 11 reviews right now.
Air Ambulance Simulator is best left unspoiled. It has 14 reviews now.
Slot Fever is alarmingly addictive. It also has 14 reviews.
Pivot Island is a masterpiece. It has some issues with communication/telegraphing interactions, but is otherwise flawless, incredibly unique, and loads of fun. I couldn't recommend it more. It's at 16 reviews right now.
I know you said submit one, but there's too many great games for me to pick.