You can download the Gallery's games and play them on your own computer.
Source code
Choose this if you want to build the games yourself, or investigate how they work.
Linux
Packages may appear someday.
Mac OS X
These are unsigned, so your computer may complain about running untrusted programs. I'll fix this if someone sends me a free MacBook and $100 for an Apple Developer account.
This build is also a few years old. It doesn't include Advanced Rogue 7, XRogue, or recent bug fixes. Sorry.
Windows
Test build for 64-bit Windows 8. This is new and likely to have problems.
Bugs?
If you find any problems, report them on Bitbucket.