This demo version of Trawel includes the base command line game but not the graphical version.

Trawel is a historically-inaccurate open world text adventure RPG. Created as a re-imagining of old-school calculator and early command line games, it eschews their limitations but attempts to capture their spirit, and bring it in line with modern quality of life standards with a graphical GUI.
The Demo version includes all the gameplay, but not the GUI.