While a "Free Download" for the full modern version of Platypus II is generally not available legally (as it is a paid title), you can find the following related free materials:
Some platforms offer a demo version of the game or its remake, Platypus Reclayed , which allows you to play the first few levels for free on Steam . Platypus II Free Download
sveinbjornt/Platypus: Create native macOS applications ... - GitHub While a "Free Download" for the full modern
There are community-created mods, such as Platypus UaFoe , available for free on platforms like itch.io , though they often require you to own the original game files. Educational "Platypus Report" Templates such as Platypus UaFoe