For the PC? Ok...
1. DOOM (This was the game that made me believe PCs can play games!)
2. DIABLO II (Finally a PC RPG with a great story line!)
3. The SIMS (The only game where I can get 2 wives and not get arrested for bigamy!)
4. THEME HOSPITAL (Love being the head of a hospital!)
5. WARLORDS: BATTLECRY II (My ultimate strategy game!)