What's a good two player game?

[Clone v.117]

Age of Empires?

[Ad Bot]

[Stocking]

goemon's great adventure for N64 is one of my fondest video game memories in terms of co-op

[LagoomSack]

Checkers is a good one, perhaps you should try it?

[ßlöükfáce]

I used to play robotnik's mean bean machine a lot
it has a 2 player mode

[Char]

fortune street
tetris attack
most super mario bros. games
most kirby games are multiplayer I think

[Zeblote]

Why are people suggesting board games and old garbage he obviously wants modern computer games

[Kingdaro]

Why are people suggesting board games and old garbage he obviously wants modern computer games

The title nor the OP specify computer games, and OP stated he and his friend enjoy many genres. What people have mentioned here are indeed multiplayer games.

[Legodude77]

Monaco.

[Lesrock]

Saints Row 2 has co-op, and it's more fun than saint's row the third/saints row iv, though the pc port of it is slightly broken

[uno_da_cat]

You should check this website out. Gives a list of multiplayer games including Couch Co-op or Multiplayer. Whatever you're looking for.
http://www.co-optimus.com/system/4/pc.html

[psychomutt]

super smash brothers

[Planr]

portal 2

easy answer

[Mr.Noßody]

Going outside...

[Sentry]

Life

[Siberian Husky]

I have one up to 99 players, BLOCKLAND