Ratings are warped slightly, but here we go. (Not actually set in stone, but it's a good idea of where most stuff is)
+20 Final Fantasy III (6)
+19 Disgaea: Hour of Darkness
+18 Borderlands
+17 The Oregon Trail
+16 Fallout 3
+15 Age of Empires 2: The Conquerors
+14 Pokemon Gold/Silver/Crystal
+13 Uncharted 2
+12 Mortal Kombat 9
+11 Halo 3
+10 Sonic Adventure 2
+9 Super Metroid
+8 Final Fantasy
+7 Mortal Kombat II
+6 Persona 3
+5 Super Smash Bros. Brawl
+4 Orcs Must Die
+3 Terraria
+2 Spore: Galactic Adventures
+1 VVVVVV
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Ytterbium: That one element no one's going to pay attention to.