enrageorange on 29 December 2013
I'm assuming you means first party games, not just exclusives. Otherwise my sony and Microsoft lists would be a bit different.
Microsoft
1. Halo
2. Fable
3. Age of Empires(PC childhood)
Sony
1. Crash Bandicoot(PS1 childhood)
2. Infamous
3. God of War
Nintendo
1. Metroid
2. Zelda
3. Kirby