GTA 5
The Division
Dying Light
Borderlands games
Left 4 Dead 2
7 Days To Die
Warframe
Rainbow Six Siege
Arma III
Killing Floor 2
Destiny 2
Monster Hunter: World
Payday 2
Tom Clancy’s Rainbow Six: Vegas 2
Swat 4
Splinter Cell games
Far Cry 3, 4, 5
Outside of shooting:
Ultimate Chicken Horse
Overcooked (local coop)
Overcooked 2
Human Fall Flat
Super Bunny Man (local coop)
Viscera Cleanup Detail
Cuphead
Rocket League
Forza Horizon 3
Minecraft
Craft The World
Terraria
Stardew Valley
Lovers in a Dangerous Spacetime
A Way Out
Don't Starve Together
Portal 2
Saints Row IV
The games in green are the games I have sunk the most hours into.
The games in orange are the games I wish I would play more.
The games in red I have yet to play, but I know they're good because I watch people play them.
The games in white I have played but I just haven't played them very much. FH3 I just played the demo for a good 6 hours.
You owe it to both you and your friend to at least consider playing 95% of these games.