The Lost Vikings is a side-scrolling puzzle/platform video game series which was developed by Silicon & Synapse (later Blizzard Entertainment). The first game, The Lost Vikings, was released in 1992 by publisher Interplay Entertainment for DOS, Amiga, Sega Mega Drive and SNES among others. The sequel, The Lost Vikings II, was developed by Blizzard and released in 1997 by Interplay for the SNES. A 32-bit enhanced version of The Lost Vikings II was developed for the Sega Saturn, PlayStation and PC, known in the United States as Norse By Norsewest: Return of the Lost Vikings and in Europe as Lost Vikings 2: Norse by Norsewest. It was released by Interplay in 1997, featuring a new super deformed style for the characters (the original version kept the same art style as the first game) as well as voiced dialogue samples. However, Blizzard was not involved in the creation of these 32-bit ports. Instead, they were handled by Beam Software.

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.