I played around a bit with the physics system and character controller with Martin F, speculating on whether the character had a physics simulation or, what seems more likely, a custom implementation based on a collider.
I borrowed a copy from Martin F, and started playing from the beginning.
I almost thought the intro music was generated, it sounded a bit like it, but then it seemed to loop a lot as well. After getting out of the caves, there is some pleasantly sparse ambient music.
webrender.rb:2315:output_full_game(DB, @3991, options: {})ocdgamer.rb:901:output_entries_filtered( @3991, headline:Passwords / Cheat Codes, [filter], show_dates:false) ocdgamer.rb:901:output_entries_filtered( @3991, headline:Facts, [filter], show_dates:false) ocdgamer.rb:901:output_entries_filtered( @3991, headline:Analysis, [filter], show_dates:false) ocdgamer.rb:901:output_entries_filtered( @3991, headline:Quotes, [filter], show_dates:false) ocdgamer.rb:901:output_entries_filtered( @3991, headline:Technical Notes, [filter], show_dates:false) ocdgamer.rb:901:output_entries_filtered( @3991, headline:, [filter], show_dates:true) ocdgamer.rb:901:output_entries_filtered( @3991, headline:Log entries, [filter], show_dates:true)