Hi,

1. Assassin's creed 1,2,Brotherhood (Can't choose one becuase they are all brilliant)
2. Any of the Legend of Zelda games
3. Fallout 3


That's for the older ish games. For more relevant ones i'd say my top picks are

1. Fallout 4, (It's so much god damn fun)
2. Counter Strike: Global Offensive (Have way to many hours in it)
3. Mad Max (Pretty controversial, But a seriously good fucking game)