Overcooked! 2, an absolutely brilliant game to play in co-op just recently got even bigger with the Night of the Hangry Horde DLC now available. You can either buy it directly or if you have the Season Pass, it's another that's included.
Sounds like quite an amusing DLC, as it comes with a new Horde Mode which actually looks pretty good. More than just a silly name, it introduces some new game mechanics as you try to repel waves of undead ingredients across eight levels. On top of that there's twelve additional levels, nine new kitchens, and four new chefs to pick from.
If you missed it, I had some thoughts to share on the game in a previous article, where I said it's "Easily one of the best co-op games available for Linux." and I stick by that. We've had a wonderful time with it!