Omnispeak is an open-source reimplementation of Commander Keen
episodes 4, 5, and 6. It aims to be a pixel-perfect, bug-for-bug
clone of the original games, and is compatible with savegames
from the DOS version.

Omnispeak also includes several new features, including:
* Improved graphics scaling and compatibility support.
* Dramatically improved joystick/gamepad support.
* QuickLoad and QuickSave support (F5 and F9 by default)
* Support for real AdLib / OPL2 compatible sound cards
* Support for the OPL2LPT

NOTE:
To play the Commander Keen games with omnispeak you need the
original game files!

Run
* omnispeak-keen4
* omnispeak-keen5
* omnispeak-keen6
from the folder where the original game files are located.