>>12008770 (OP)
Here's my list, although it lacks some of the Disney titles that often pop up on these sorts of lists as well as games that were probably better off on other systems (looking at you Dynamite Headdy)
Alex Kidd in Miracle World
Alex Kidd in Miracle World II
Alex Kidd in Shinobi World
Asterix
Aztec Adventure: Golden Road to Paradise
Captain Silver
Choplifter
Danan: The Jungle Fighter
Fantasy Zone
Fantasy Zone II: Tears of Opa Opa
Golden Axe Warrior
Golvellius
Kensaiden
Lord of the Sword
Master of Darkness
Montezuma's Revenge
Ninja Gaiden
Phantasy Star
Power Strike
Power Strike II
R-Type
Rastan
Shinobi
Sonic Chaos
Sonic The Hedgehog
Sonic the Hedgehog II
SpellCaster
Wonder Boy III: The Dragon's Trap
Wonder Boy in Monster Land
Zillion
Zillion II
>>12009195
Strong disagree here, there are barely any good SMS games compared to the NES's library, and most of the good ones are pretty basic arcade conversions and so-so platformers. Obviously there are standouts, but few that reach the level of innovation or stylishness of their NES counterparts.