All you need to run the game is the exe file.
You will, however, need to consult the manual which is provided in pdf format. An "alternative" version of the manual is provided as separate jpg files, but one way or another you'll need to have it handy while playing.,
Game by Johannes Leino
Graphics by Tuuli Hypén
Audio by Jakke Suominen
Display screen font, "Orange Kid" by Ray Larabie