When you unzipped the itch demo version, is it in a read-only folder?
Please clarify:
On itch demo 0.2.7, does the game run at all? Does it crash instantly or after a few seconds? Are there just a bunch of white squares, purple and black squares, or do textures load?
On steam demo, does the game run at all? Does it crash instantly or after a few seconds? Are there just a bunch of white squares, purple and black squares, or do textures load?