I mean games you couldn’t put down/stop playing, games which you would get stuck on and swear. Also games which you just loved as a child or as an adult, games which made you laugh and games which made you cry. Those kind of games - kind of like your favorite games of all time but more those which really changed your gaming experience.
Re: Games Which Changed Your Life
Sega - Street Fighter and Aladdin
N64 - Yoshi Story, Mario Kart and Ocarina of Time
PC - Red Alert, The Sims and GTA
Wii - Mario Bros