Firecore Model (has a port on the top that takes Mega drive cartridges). Plugged into the CRT in the Arcade. It has the following games built in:

• Alex Kidd in the Enchanted Castle
• Alien Storm
• Altered Beast
• Arrow Flash
• Bonanza Bros.
• Chakan: The Forever Man
• Columns
• Columns III
• Comix Zone
• Crack Down
• Decap Attack
• Dr. Robotnik’s Mean Bean Machine
• ESWAT: City Under Siege
• Eternal Champions
• Fatal Labyrinth
• Flicky
• Gain Ground
• Golden Axe
• Golden Axe II
• Golden Axe III
• Jewel Master
• Kid Chameleon
• Mean Bean Machine
• Mortal Kombat
• Mortal Kombat II
• Mortal Kombat III
• Phantasy Star II
• Phantasy Star 3: Generations Of Doom
• Ristar
• Shadow Dancer: The Secret of Shinobi
• Shinobi III: Return of the Ninja Master
• Sonic & Knuckles
• Sonic 3D Blast – Flickie’s Island
• Sonic Spinball
• Sonic the Hedgehog
• Sonic the Hedgehog II
• Sword Of Vermilion
• The Ooze
• Vectorman
• Vectorman II

It also has these, not sure why they are a separate list:

• Air Hockey
• Adventure in Park
• Black Sheep
• Bomber
• Bottle Taps Race
• Brain Switch
• Bubbles Master
• Break The Fireline
• Cannon
• Checker
• Chess
• Cross The Road
• Curling 2010
• Dominant Amber
• Fight or Lose
• Flash Memory
• Hexagonons
• Hide and Seek
• Hidden Agenda
• Jack's Pea
• Jewel Magic
• Jura Formula
• Lost World Shadow
• Mahjong Solitaire
• Meatloaf Rotation
• Mega Brain Switch
• Memory
• Mirror Mirror
• Mr Balls
• Mya Master Mind
• Naval Power
• Panic Lift
• Plumbing Contest
• Skeleton Scale
• Snake
• Spider
• T-Rex Memory Match
• Wall Breaking
• Warehouse Keeper
• Whack A Wolf
• Yawning Triceratops