Rubygame 2.6.4 is now available. This is a maintenance release which fixes a bug in the gem spec:
- Fixed: Rubygame's "require_path" setting in the gem spec was interfering with ruby-opengl (and potentially other libraries). [#43]
If you have problems loading ruby-opengl when Rubygame 2.6.* is installed via RubyGems, you should uninstall older versions of the Rubygame gem, then reinstall version 2.6.4 (or later).
Thanks to brandon for reporting this issue, and tyler for reminding me about it.