Can't remember about retail copies, so I focus on Steam.

FINISHED:
Assassin's Creed: Brotherhood
Borderlands (except the last 2 DLCs)
Bully
Supreme Commander 2
Tom Clancy's Splinter Cell: Conviction
BioShock
COD4 Modern Warfare
COD Modern Warfare 2
Darksiders
Hitman: Blood Money
Mafia 2 (except DLCs)
Mass Effect
Mass Effect 2
Mini Ninjas
Serious Sam HD: The First Encounter

Oh no now I realized there are many games in my Steam library which I haven't finish but don't want to play anymore will compile/update the list when i'm free

This post has been edited by donchaka: Nov 15 2011, 01:04 PM