Triplane Turmoil is a sidescrolling dogfighting flying game for MS-DOS by Finnish developer Dodekaedron Software. The game is based on the 1984 MS-DOS game by David Clark, Sopwith. Originally released as shareware, in 2009 Dodekaedron placed the source code, documentation, images and sounds under the GPLv3 on Sourceforge, hosted later on github.com. The community continued the support and ported the game via SDL to other platforms as Linux and Windows.
A sequel, Triplane Turmoil 2, was released …