These are what I have but I'm more into the old Platform (Run & Jump) games..
Though emulators and roms are great and come in handy either to test a rom but if you like buy the original. Also some games are very rare and cost a lot of money, i.e Daze Before Christmas, Streets of Rage 3, Megaman Willy Wars, Ecco Jr (Euro) this give you a chance to play them until you can afford them. Other games were released only in Japan and wont play on youre system without a convertor so you won't get a chance to play them without an emulator. I only collect games I enjoy, Im not a collector just a an 80s child going through a midlife crisis 
4 in 1, Rainbow Island, Super Monaco GP, Super Real Basketball, Aero Blaster (No Manual)
Adams Family (No Manual)
Alex Kidd in the Enchanted Castle (Comp)
Aladdin (Comp)
Boogerman A Pick and Flick Adventure (No Manual)
Bubba N Stix (Comp)
Bubble and Squeak (No Manual)
Bubsy (Comp)
Castles of Illusion starring Mickey Mouse (Comp)
Chiki Chiki Boys (Comp)
Chuck Rock (Comp)
Chuck Rock II Son of Chuck (Comp)
Cool Spot (Comp)
Daffy Duck in Hollywood (No Manual)
Double Dragon 3 (USA)(No Manual)
Earth Worm Jim (Comp)
Earth Worm Jim 2 (Comp)
Ecco the Dolphin (Comp)
Ecco The Tides of Time (Comp)
Ecco Jr. (USA) (Comp)
The Flinstones (Comp)
Fantasia (No Manual)
Flink (No Manual)
Garfield Caught in the Act (ComP)
Ghouls N Ghost (No Manual)
Global Gladiators (No Manual)
Golden Axe II (Comp)
Greendog the Beached Surfer Dude! (Comp manual damaged)
James Pond II Codename Robocod (No Manual)
James Pond 3 (Comp)
Joe & Mac (Comp)(USA)
The Junge Book (Comp)
Klax (No Manual)
Lemmings (No Manual)
The Lion King (Comp)
Marvel Land (No Manual)(USA)
Mega Games 2 - Shinobi, Streets of Rage, Golden Axe (Comp)
Micky Mania (Comp)
Micro Machines (Comp)
Micro Machines 2 Turbo Tournament (Comp)
Mr Nutz (Comp)
Pinocchio (No Manual)
Quackshot starring Donald Duck (No Manual)
Real Monsters (Comp)
Ristar (Comp)
Rolo to the Rescue (Comp)
Second Samurai (Comp)
Shadow of the Beast (Comp)
Sonic Compilation (Comp)
Sonic the Hedgehog (Comp)
Sonic the Hedgehog 2 (Comp)
Sonic 3 (COmp)
Streets of Rage (COmp)
Talespin (Comp)
Taz-mania (Manual Damaged)
The Smurfs (No Manual)
Tiny Toons Adventure Busters Hidden Treasure (Comp)
Toe Jam & Earl in Panic on Funkotron (No Manual)
Toki (Comp)
Toy Story (Comp)
Wonder Boy III Monster Lair (No Manual)
Wonder Boy in Monster Land (Comp)
World of Illusions (Comp)
Yogi Bear Cartoon Capers (Comp)
Also I have Zool and Pitfall on order and they should be here later this week, I also would love the below which I intend buying (cheaply) if they come up on ebay:-
AERO THE ACROBAT (PAL Rare) 24.99 (£9 USA inc Postage)
Mega Turrican - 9.99
Vectorman 2 (USA)(£8) inc postage
DONALD IN MAUI MALLARD - 9.99 comp
Smurfs: Travel The World (smurfs 2)(Autour Du Monde) - 9.99
Zero the Kamikaze Squirrel - £16 (no manual) UK
Bugs Bunny in Double Trouble - 9.99
Rocket Knight Adventures 7.50
Streets of Rage 2 - 7.49 (Comp)
Shadow of the Beast II - 3.50
MEGA BOMBERMAN - 6.00
Sonic and Knuckles - 7.99
POCAHONTAS - 13.00 (Rare)
Bubsy II - £6.99 No Manual
Ariel Little mermaid - 5.99
James Pond Underwater Agent - 11.99
Daze BEfore Christmas - £36
DESERT DEMOLITION - 12.99
Dynamite Headdy - 4.99 comp
Battletoads 2.00
Battletoads Double Dragon - 14.99
Asterix and the Great Rescue
Asterix and the Power of The Gods
Beggar PrinceGolden axe III
A Dinosaurs Tale
Cannon Fodder - 4.99
Great Circus Mystery, The - Starring Mickey & Minnie
Lemmings 2 tribes - £3.00
Marble Madness - 2.99
Primal Rage - 3.50
Puggsy - 4.00
Sonic 3D - Flickies' Island - 4.00
Sylvester and Tweety in Cagey Capers - 4.95
Taz Escape from MArs - 4.50
Tom and Jerry
Were BackShining Force 2 (PAL) - £50
Streets of Rage 3 - £50
POCAHONTAS - £69
Mega man wily wars
spiderman animated
Well thats my two pennies worth...