Gta: San Andreas, spent hundreds of hours with that one.
Gun and Black were awesome as well.
I loved the PlayStation 2 system. It was a great one because it could play all of my favorite psx games while playing all the new ones as well (unlike the ps3 )
My favorite game of is Mercenaries: Playground of destruction
This was one of the first real sandbox games I played. Set in a fictional korean war, it comes bundled up with SO many cheat codes, and very funny easter eggs. It is literally jam-packed with hours of fun, with so many things you can do like highjack helicopters, highjack tanks, and even plant c4 on a jeep, drive it into enemies, and blow it up.
Well that's all I have to say. Feel free to post what your favorite games are.
Gta: San Andreas, spent hundreds of hours with that one.
Gun and Black were awesome as well.