Secret Maryo Chronicles is a free and open-source two-dimensional platform computer game that began in 2003.

Secret Maryo Chronicles began as a SourceForge project in January 2003.

[7] Secret Maryo Chronicles was listed as the number one open source video game by APC in January 2008.

[10] Secret Maryo Chronicles was selected in March 2009 as "HotPick" by Linux Format.

[11] An in-detail review of the Free Software Magazine in 2015 called the game a "great way to procrastinate".