Madou Monogatari (魔導物語, Madō Monogatari; translates as "Story of Sorcery") is a series of first-person dungeon crawler RPGs by Compile. The first game was released in 1989 for MSX and NEC PC-9801. The characters of this series would later be used in the puzzle game Puyo Puyo.

Master of Monsters is a turn-based strategy game created by Japanese software developer System Soft (now System Soft Alpha) for the MSX and NEC PC8801 later ported to a variety of consoles and PCs including the PC Engine, NEC PC9801, Sega Mega Drive (Genesis), Sega Saturn and PlayStation. While it never garnered the same success as its System Soft stablemate Daisenryaku, the game has garnered a loyal following over the years. Its success in the US market on the Sega Genesis proved sufficient for a sequel on the Sega Saturn and an anime art-style enhanced PlayStation version titled "Disciples of Gaia" with a Japanese RPG feel.1 Today, System Soft Alpha has returned the game to its strategy-based roots, and the 2 titles (I, and "Final" – but not II) in the Master of Monsters series as originally popularized on the NEC 9801 PC were updated by System Soft Alpha with new graphics and gameplay features. Two more sequels (3 and 4) were made for Japanese Windows and harken back to the deep strategic gameplay of the NEC PC9801 versions (as opposed to the more casual Genesis and PlayStation versions). Available for Japanese language Windows-based systems, the remakes include マスターオブモンスターズIII Special Edition, マスターオブモンスターズ4 ～光と闇の争覇～, Master of Monsters Value Edition (the original game, updated and with expansion packs added in), and 真・マスターオブモンスターズ Final. There was also a spin-off of the game targeted towards the younger audience titled Masumon Kids, and there is now a cell-phone based version of the game available for the popular cell phone game market in Japan. [1]

Metal Sonic Hyperdrive is a heavy modification of Sonic the Hedgehog by Darkon360/GothicReaper/LoneDevil for the Sega Genesis. with brand new Zones, New Music, Extra playable characters, and Modes. Starting Metal Sonic, taking Sonic's role as the main protagonist to stop Dr'Robotnik's greatest inventions yet. Also starting special guests such as Kirby, and Somari.

Metal Sonic in Sonic the Hedgehog 2 is a hack of Sonic the Hedgehog 2 created by Darkon360/GothicReaper/LoneDevil. It stars Metal Sonic as the playable character instead of Sonic the Hedgehog. The hack comes with 3 different playstyles for Metal Sonic.