You finally talked your friend into getting a PC, but what is the perfect PC co-op game to play together? It can be hard to find a good list of co-op games on Steam, but thankfully this list ranks the best PC co-op games on Steam to play with friends, some of which can even be couch co-ops, if your computers are in the same room.
Do you want to play a co-op sports game? Rocket League, the soccer-racing hybrid game from Psyonix, might just be your best bet. How about a survival horror co-op game? Check out 7 Days to Die, or Left 4 Dead 2. If you have no idea what to play, just join the masses on PlayerUnknown's Battlegrounds and find out what the hype is all about.
Not all of these Steam games feature local co-op, but there are a few good ones that do. This list is perfect for finding two-player games on Steam to play with a buddy, but many of them support up to four players (or even more). Vote down any two-player PC games you have played but wouldn't recommend to others.