A GOG installer or a simple folder structure for manual extraction.
It is a hybrid game where you navigate a theme park, playing various arcade-style mini-games in different themed areas (Fantasy, Medieval, etc.) to solve a mystery. Theme.Park.Mystery-GOG.rar
If you are looking for the original printed paper materials (manuals or code wheels) that came with the 1990 physical box, you can often find digital scans of them on archives like the Internet Archive or Museum of Computer Adventure Game History. A GOG installer or a simple folder structure
Digital manuals or "feelies" (the original paper-based components like maps or hint sheets converted to PDF). Theme.Park.Mystery-GOG.rar