You can legally purchase and download the game through the following platforms:
What's included in the download? The Standard Edition includes: Quadrilateral Cowboy. Developer commentary. Reference manual. BLENDO Games Quadrilateral Cowboy on Steam Quadrilateral Cowboy Free Download
While the full game requires a purchase, there are free community-driven and developer-supported additions: You can legally purchase and download the game
: The developer has previously released free post-release levels and mods to expand the game. Reference manual
The game is ; it is a commercial title that can be purchased for Windows, Mac, and Linux. Where to Download
: A community-made, downloadable multiplayer mod is available on Itch.io , though it is an experimental project. Quadrilateral Cowboy FAQ - BLENDO Games
: Players can download free community-created missions and items through the Quadrilateral Cowboy Workshop .