What open source platform game was modeled after a Nintendo game released in 1985 that required players to rescue Princess Toadstool?
Secret Maryo Chronicles Secret Maryo Chronicles, short: "SMC", is a free, open source two-dimensional platform game. "Secret Maryo Chronicles" has been described as a "Super Mario Bros." clone by "PCtipp".
OHRRPGCE The Official Hamster Republic Role Playing Game Creation Engine, abbreviated as OHRRPGCE or OHR, is an open-source, "All-in-one" game creation system. It was designed to allow the quick creation of 2D role-playing video games. It was originally written by James Paige in QuickBASIC and released in late 1997 or early 1998. In May 2005, the source code was released as free software under the terms of the GNU General Public License (GPL), and it was soon ported from QuickBASIC to FreeBASIC.