If you liked the puzzle design style of the Witness, check out Taiji. It uses a similar open-ended structure that leaves puzzle rules for you to discover on your own.
I’ll back up June. I was “that’s pretty nice” on Undertale but wasn’t nearly as positive on it as its fandom was. I loved Inscryption. It’s not meta like Undertale, but it does have occasional fourth wall breaks, which is part of its game-within-a-game fiction.
Design platformer levels with your friends, then race them to the end, locally or online. Points are only awarded if someone died, so make the level extra dangerous!
Slick arcade-style twin-stick shooter with a pumpin’ soundtrack. Clear out arenas full of robots, build up combos, and go for a high score. A large roster of characters offer a wide variety of playstyles. There’s also 4-player local co-op.
Overcooked! 2 $6.24 (75% off, matching the all-time low)
Chaotic co-op cooking, local or online. Complete restaurant orders quickly in increasingly absurd scenarios. Cook in a haunted kitchen, above a mineshaft, in the middle of the highway, or on a burning hot air balloon that crashes into another restaurant! This is the kind of game that people joke will ruin friendships.
A little guy in a green tunic picks up a sword and goes on an adventure, but the game is in an unknown language and you only have a few pages of the manual. It’s like a metroidvania but your progress is based on knowledge.