The Master Chief collection. Runs great, and has both co-op and competitive multiplayer. Not on sale ATM but I bought it for $10 not too long ago.
Curveball suggestion: Phantasy Star Online Blue Burst. I loved PSO back in the day and it’s amazing to me that I can install it on the Deck through Lutris.
It was something like 18 years ago I spent my entire summer vacation playing PSO, went to bed at 8am and woke up in the evening so I could play with US people as there weren't enough EU players on schthack.
Guess it's time to spin it up once more for old times sake.