Games people might be surprised to find out had multiplayer modes.

Current Events

Psi-Ops: The Mindgate Conspiracy, which is pretty bad.

Each player controls part of one character, one does moving and aiming while the other decides when to actually shoot or use a power.
Any last one-liners before I go ape on you? - Hoss Delgado
Mmm, toast some marshmallows for me too Mailman.- Chris Paul