"New" SNES and Genesis

[SuperAnthony64]

SNES:
Maximum Carnage
Castlevania Dracula X
Super Star Wars Series
Demon's Crest

Genesis:
TMNT Hyperstone Heist
Aladdin
Mega Bomberman
Castlevania Bloodlines

[RyaNtheSlayA]

On the Genesis IMO it's mandatory to own Comix Zone and Ristar.

Dynamite Headdy is fantastic as well.

[Ack]

Honestly, you can't go wrong with any of the games on the SNES' Defined list. I never agreed with Uniracers on there (really? for real with that game? Contra or Castlevania are honorable mentions and Uniracers makes the main list?) but any of the other games are solid choices.

While I also believe Contra and Castlevania helped define the console, one of the things I remember specifically about the SNES while growing up is the sheer number of ads I saw for Uniracers. I don't think I've ever seen a commercial for Castlevania or Contra, but I've never forgotten those short clips of Uniracer stages...which is pretty funny, considering it's the only one of those three I haven't ever played. In fact, it's pretty much the only commercial for a SNES game that I actually remember, which should probably tell you how often they played that bloody thing during my cartoons.

Anyway, a few games that I have enjoyed:

SNES-

Hack and Slash
The King of Dragons
Magic Sword

RPG
Final Fantasy III (VI in Japan)
Lufia II: Rise of the Sinistrals
Live A Live (import)

Fighting
Street Fighter Alpha 2
Killer Instinct
WeaponLord
Gundam Wing: Endless Duel (import)

Platformer
Donkey Kong Country 2
Mega Man X
Mickey and Minnie in the Great Circus Mystery
Kirby Super Star

Run and Gun
Cybernator

[Xeogred]

Thunder Force III (still haven't played Lightening Force)

Oh man, as much as I love Thunder Force III / AC, the 4th game is on a whole new level. Quite a bit tougher, bigger vertical scaling levels, some of the best graphics on the Genesis, some of the best music on the Genesis, etc... might even be my favorite shmup!

[BurningDoom]

My personal top favorites for each:

SNES:
-Actraiser
-Aero Fighters
-Cool Spot (also on Genesis)
-Contra III: The Alien Wars
-Donkey Kong Country 1-3
-Final Fight 1-3
-The Legend of Zelda: A Link to the Past
-Lethal Enforcers (also on Genesis)
-Maximum Carnage (also on Genesis)
-Mega Man 7
-Mega Man X 1-3
-Raiden (also on Genesis)
-Sim City
-Super Castlevania IV
-Super Mario World
-Super Metroid
-Tetris + Dr. Mario
-X-Men: Mutant Apocalypse

Genesis:
-Altered Beast
-Castlevania: Bloodlines
-Comix Zone
-Golden Axe 1 & 2
-Seperation Anxiety
-Sonic the Hedgehog 1-3
-Sonic and Knuckles
-Sonic 3D Blast
-Space Harrier II
-Streets of Rage 1-3
-Strider
-Truxton
-Vectorman 1 & 2
-X-Men 2: The Clone Wars

[pakopako]

(Also, most of the AAA titles for both systems are quite rare and expensive. Quite a few SNES games are possibly being hoarded and the best Mega Drive games had limited runs. Yay?)

Mega Drive/Genesis collecting isn't that expensive, nothing compared to SNES collecting.

Phantasy Star IV
M.U.S.H.A.
Cotton
And all those Mega Drive add-ons (32X, SegaCD, SMS adapter) with games of their own.

I can see the argument for Super Famicom/SNES titles though. R2, Metal Warriors, and any fan-worth-their-salt hoarding copies of Earthbound.

[Betamax001]

My faves?
SNES:
Actraiser
Link to the Past
Super Mario World (the one with SM All Stars is great, because it has so much Mario goodness!)
FFIV
FFVI
Chrono Trigger
Any version of Street Fighter II

Whether you play them on SNES or a port of them is up to you, and your wallet

As far as Genesis goes...
uhm...
the only ones I really played were
the Streets of Rage games
I guess Street Fighter II again...
Thunder Force IV
Gunstar Heroes
Columns
I dunno I never really got into Genesis that much :/