Whats your favorite game of all time and why

[Mistershine]

Such a hard choice to make, its a toss up between:
1: NiGHTS/Christmas NiGHTS
2: Sega Rally(I played this SO much trying to beat the times in SSM)
3: Unreal Tourney(The first 1)
4: Monty Mole(Speccy)
5: Currah Microspeech(I was 8 and making my speccy swear was awesome)