The best alternatives to Oh no are Hextris, Become One, and ColorRun. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Oh no?
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Become One is a game of group synchronization. The goal is simple: everyone plays their card in ascending order. If someone plays out of order, you lose a life. No communication is allowed. Be warned, this is harder than it seems. Good luck on your voyage.
I've been obsessed with slingshot/golf games and made this minimal game to learn Unity. It's a really fun way to kill time and relax. No score or no time limits. Hope y'all will enjoy it :)