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Gosu is a 2D game development library for Ruby and C++.

It’s available for macOS, Windows, Linux (including Raspbian), and iOS.

Gosu is focused, lightweight and has few dependencies (mostly SDL 2). It provides:

Gosu is mostly used to teach or learn Ruby or in short game development competitions. It’s also a great prototyping tool and should work for indie game development, though nobody has really tried that.

Resources

In addition to the documentation linked from the sidebar, there is a book by Mark Sobkowicz that will guide you through the creation of four different games:

Both Gosu’s documentation and the book assume that you used Ruby before.

Some recent talks and screencasts about Gosu, or Ruby game development in general:

Licensing

Gosu and all documentation © 2001-2017 Julian Raschke, Jan Lücker, and other contributors. Gosu is released under the MIT licence.