1. Grand theft Auto
GTA san andreas is simply the best game ever for me . also recent GTA V was perfect
2. HALO
loved them all except Reach which felt too military , and yes , i loved halo 4 and i think its amazing
3. HALF LIFE
half life 1 is still a game that i would play , it didn't lose any of its fun since 1998 , same with half life 2
4. Mass Effect
my love in sci fi continues . mass effect is probably the best Trilogy of this gen . played all three games 4 times already !
5. Bioshock
played Bioshock 1 and Bioshock infinite . very Artistic , fun gameplay and always with an incredible story , bioshock infinite's ending nearly blew my brain .
the only elder scroll that i played was skyrim , also the only MGS that i played was MGS4 so i didn't include those .