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.
Balloon Fight Balloon Fight (バルーンファイト , Barūn Faito ) is an action video game developed by Nintendo. The original arcade version was released for the Nintendo VS. System as Vs. Balloon Fight, and its Nintendo Entertainment System counterpart was internationally released in 1986. The gameplay is similar to the 1982 game "Joust" from Williams Electronics. The home Nintendo Entertainment System version was ported to the NEC PC-8801 in October 1985, the Sharp X1 in November 1985, the Game Boy Advance as "Balloon Fight-e" for the e-Reader in the United States on September 16, 2002, and as part of the Famicom Mini Series in Japan on May 21, 2004.