Okay, so here's what I've decided to do.  Take my current collection of Sega Genesis games, and add to it, every good genesis game I've ever played.  Ever.  But, I'll need some help.  There's one game in particular that I cannot remember the name of.  I'll like it if you make suggestions, but, please don't suggest games already in my collection or on my wishlist.

But, before all of that, there's one game in particular that I remember playing over a cousin's house.  I can't remember the name of it.  Basically, it was a racing game.  Monster trucks, and the entire track could be viewed on one screen.  I can't remember much, but, if someone can name this game for me, I'll know it when I see it.  Solved.

Next thing is my actual collection which consists of:

Sonic
Sonic 2
Sonic 3
Sonic & Knuckles
Sonic 3D Blast
Sonic Spinball
Dr. Robotnik's mean bean machine
Road Rash
Road Rash II
Mortal Kombat
Mortal Kombat II
Ultimate Mortal Kombat 3
Shaq-Fu
Power Rangers
Spiderman & Venom: Maximum Carnage
Spiderman & Venom: Separation Anxiety
Cliffhanger
Boogerman
Beavis and Butthead
Tommy Lasorda Baseball
Battletech
Street Fighter II
Super Street Fighter II
Streets of Rage 2
Joe Montana Football
King of the Monsters 2
Quack Shot: Starring Donald Duck
Toy Story
NCAA: Final Four Basketball
Ren & Stimpy in Stimpy's Invention
Combat Cars
Vectorman
Batman: Forever
FIFA international Soccer
Frank Thomas Big Hurt Baseball

Coming in the mail are:

Tom and Jerry: Frantic Antics
World of Illusion: Starring Mickey and Donald

Finally, the wish list so far:

Ranger X
Super Hang-On
Outrun
Outrunners
Aladdin
Castlevania: Bloodlines
Gunstar Heroes
General Chaos
Mega Bomberman
X-Men
Ristar
Battletoads & Double Dragon: The ultimate Team
Troy Aikman Football
Rolling Thunder 3
Batman & robin
Mutant League Football
Robocop Vs. The Terminator
Revenge of Shinobi
Micromachines
Beyond Oasis
Thunder Force IV
Rocket Knight Adventures
Shadow dancer: The secret of Shinobi
Super Off road
Ecco the dolphin
Alien Soldier
Phantasy Star IV
Pulseman

Now, here's the thing.  Games like earthworm Jim, I have the remake for, so I see no need to get the same game again on genesis.  Same goes for castle of illusion.  I will get it on PS3.  A quarter of the games I'd played at some point in time, or watched someone play.  The others are games I think looked nice on youtube. 

I remember way back watching my brother play super hang-on back in the day in our room.  I was too young to play back then and couldn't have been much more than 2 at the time, and that's why that's on the list.  I know it's similar to outrun, but, whatever.

Finally, I do not want toejam and earl.  The name just puts me off...  While we're at it, I'm not much interested in comix zone either unless you can convince me to get it.

The grand total brings us to 58 games.  I'm willing to cap my collection off at 65.  What do you guys suggest?

Goodness, I thought I was happy with my collection, but, I'm going to almost double it after I get everything.

Sega Genesis was my System during that Generation, so I have played some good games that aren't in your list:

Beyond Oasis
WonderBoy in Monster World
Warlock
Thunder Force IV
X-Men II
Fatal Fury

Buy Sonic's Ultimate Genesis Collection :P.

Well, I've heard some bad things about X-Men 2.  So many bad things that I don't know if I can trust that the game is worth having.  How is it?  Fatal Fury is just some fighting game by SNK, right?  The rest I've not heard of.  I have plenty of fighters on PS3 already.  I really don't play SSFII all that much on genesis.  The other games I've never heard of.

Well I remember having both X-Men games and liking the 2nd one more, probably because you have more moves for your characters (though you'll want to be Wolverine anyways). Also that reminds me Wolverine Adamantium Rage is a great game too.

Oh.  I've only played the 1st game and I remember always dying at the against apocalypse that first time you see him in stage 4?...  I think it's after you fight juggernaut the second time (And don't you fight sabre tooth at near the beginning of that stage too?).   Maybe I got past that part once, but, I'm sure I didn't get much farther after that.

Alien Soldier
Gunstar Heroes
Streets of Rage 1&3
Phantasy Star series
Ecco the dolphin games
Greendog

i believe the game you're trying to find is super offroad

MegaMan:Wily Wars

YES!  That's it!