My friend and I play a fair bit of co-op together.

These are some of the game's we play...

• The Forest
• Far Cry 5
• Doom 3 open co-op mod (NOT BFG edition)
• Minecraft
• Salt & Sanctuary
• It Takes Two
• Astroneer
• Project Zomboid
• Portal Knights
• Halo Reach
• Borderlands 2
• Dying Light
• Elite Dangerous
• Far Cry New Dawn
• Left 4 Dead 2
• Portal 2
• Serious Sam 3
• Stranded Deep
• Subnautica with Nitrox mod

Not all are adventure type games, but all are fun to play in co-op with a friend.