What open source platform game was modeled after a Nintendo game released in 1985 that required players to rescue Princess Toadstool?
Super Mario Bros. Super Mario Bros. is a platform video game developed and published by Nintendo for the Nintendo Entertainment System home console. Released as a sequel to the 1983 game "Mario Bros.", "Super Mario Bros." was released in Japan and North America in 1985, and in Europe and Australia two years later. In "Super Mario Bros.", the player controls Mario and in a two-player game, a second player controls Mario's brother Luigi as he travels through the Mushroom Kingdom in order to rescue Princess Toadstool from the antagonist Bowser.
Ice Palace (1985 video game) Ice Palace is an action-adventure game designed by Paul Norris and published by Creative Sparks for the Commodore 64 in 1985. It is unrelated to neither 1984's Commodore 64 game "Ice Palace" by K-Tel International nor to 1988's "Beyond the Ice Palace". The game tells the story of a crown prince's quest to break an evil spell, save his land, and avenge his father. It was mostly well received by critics but failed commercially.