You're looking for a Sega Master System ROMs pack!
Alien Syndrome is a classic action-packed arcade game for the Sega Master System. Battle through hordes of creatures in this thril... Alien Syndrome Wonder Boy III: The Dragon's Trap sega master system roms pack
Under international copyright treaties, the code within a game cartridge is the intellectual property of the rights holder (often Sega or defunct third parties like Compile or Technosoft). You're looking for a Sega Master System ROMs pack
Title: Preservation in Plastic and Silicon: A Technical and Curatorial Analysis of "ROM Packs" for the Sega Master System sega master system roms pack