Sherlock Holmes Consulting Detective is a good deductive co-op and works well with 2 players (downside is that you can only play it 10 times before having to bu

Sherlock Holmes Consulting Detective is a good deductive co-op and works well with 2 players (downside is that you can only play it 10 times before having to buy more scenarios). I think Pandemic works well as 2 player, though not all agree. 7 Wonders Duel for combative PvP.