This appears to be just a copy of Chocolate Doom (Strife "was the last commercially released standalone PC game to utilize the id Tech 1 engine" according to Wi

This appears to be just a copy of Chocolate Doom (Strife "was the last commercially released standalone PC game to utilize the id Tech 1 engine" according to Wikipedia). Is there anything specific to this game in the repository, or is all the magic in the data files (which you still need to get separately, e.g. from GOG)?