My younger cousin comes over today (like every few months) and we will be playing some couch coop games over the weekend.
So far we tried a lot of games and found some great ones along the way. Sidescrollers work sometimes, but third person and isometric is better. And I won't touch another twin stick shooter haha.
Do y'all have any suggestions, it's always so much work to find a good new game (as opposed to just going after steam review, buying, and returning within 30min of playtime because it sucked).
Honorable mentions:
Swords of Ditto (literally no one plays this, but it's a pretty neat co-op zelda-like
Darksiders Genesis (hack n slash)
It takes Two (co-op puzzle)
Children of Morta (great roguelite)
I also bought Secret of Mana, maybe we'll play this.
+1 for a tentative Overcooked suggestion but only if you think you and your cousin won't strangle each other in a high stress scenario. I can't play the game with my wife because she's too goofy and I'm too serious.
Bread and Fred looks like a lot of fun but I haven't actually played it yet.
Diablo 3 was fun playing couch co-op and reminded me more than a little bit of playing Gauntlet in the good old days.