Hydlide (ハイドライド, Haidoraido?) is a 1984 action role-playing video game developed and published by T&E Soft. It was originally released for the NEC PC-6001 and NEC PC-8801 computer in 1984, in Japan only; ports for the MSX, MSX2 (a separate port released on 3.5" floppy), FM-7 and NEC PC-9801 were released the following year. A Nintendo Famicom version was first released under the name Hydlide Special on March 18, 1986 in Japan; three years later, in June 1989, that version saw a North American release for the Nintendo Entertainment System by FCI, its title having been returned to simply Hydlide.

Ice Climber (アイスクライマー, Aisu Kuraimā?) is a vertical platform video game developed and published by Nintendo for the Nintendo Family Computer in Japan and the Nintendo Entertainment System in North America in 1985. In Ice Climber, the characters Popo (ポポ) and Nana (ナナ), collectively known as the Ice Climbers, venture up 32 ice-covered mountains to recover stolen vegetables from a giant condor. In some European countries, the NES console was sold bundled with the game, increasing Ice Climber's familiarity outside Japan. An alternate version was released in the arcades as part of the Vs. Series, known as Vs. Ice Climber (VSアイスクライマー, VS Aisu Kuraimā?). It includes gameplay features not found in the home console release, such as an animated title screen, stage select menu, 16 additional mountains, occasional blizzard and wind effects, more enemy characters, and bonus multiplier items.