Are we talking about games that are overrated/underrated by critics or by fans?
Overrated:
Metal Gear Solid 2
Mortal Kombat II
Mega Man 2
Call of Duty 4: Modern Warfare
God of War
Sonic the Hedgehog
Street Fighter II Turbo
The Legend of Zelda: Skyward Sword
Underrated:
Red Dead Revolver
Metroid: Other M
Epic Mickey
Star Fox Adventures
Tak and the Power of Juju
Killzone
Retro City Rampage
Wipeout 2048