In descending order:
Super Mario Galaxy
Uncharted
Super Smash Bros. Brawl
BioShock
Twilight Princess
Little Big Planet
Metroid Prime 3
Mario Kart Wii
Killzone 2
"Now, a fun game should always be easy to understand - you should be able to take one look at it and know what you have to do straight away. It should be so well constructed that you can tell at a glance what your goal is and, even if you don’t succeed, you’ll blame yourself rather than the game. Moreover, the people standing around watching the game have also got to be able to enjoy it." - Shiggy







