Master System+ Game Gear

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Master System
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After Burner
Aleste/Power Strike
Alex Kidd in Miracle World
Alien Storm
Aztec Adventure
Baku Baku Animals
Bomber Raid
Bonanza Bros
Bubble Bobble
Captain Silver
Columns
Deep Duck Trouble
Double Dragon
Dr. Robotnik's Mean Bean Machine
Dragon Crystal
Dynamite Dux
Fantasy Zone 1, 2
Forgotten Worlds
Gain Ground
Ghouls n' Ghosts
Golden Axe Warrior
Golvellius: Valley of Doom
Lord of the Sword
Lucky Dime Caper
Marble Madness
Master of Darkness/Vampire
Mickey Mouse: Castle of Illusion
Mickey Mouse: Land of Illusion
Mickey Mouse: Legend of Illusion
Ninja Gaiden
Phantasy Star (J translated or U)
Power Strike 2
Psychic World
Quartet
Rainbow Islands
R-Type
Sagaia
Shinobi
Solomon's Key
Sonic the Hedgehog 1, 2
Sonic Chaos
Space Harrier
Spellcaster
Wonderboy
Wonderboy 2: Monster World
Wonderboy 3: The Dragon's Trap
Ys
Zillion 1

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Game Gear
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Alien Syndrome (GG version)
Coca-Cola Kid
Crystal Warriors
Defenders of Oasis
Dynamite Headdy
GG Aleste
GG Shinobi 1, 2
Gunstar Heroes
Psychic World (GG version)
Phantasy Star Adventure (Translated from Japanese)
Phantasy Star Gaiden (Translated from Japanese)
Royal Stone
Ristar
Shining Force Gaiden
Shining Force: The Sword of Hajya
Shining Force: Final Conflict (translated from Japanese)
Sonic Triple Trouble
Sylvan Tale (translated from Japanese)
Tails Adventure