DragonRuby Game Toolkit
A commercial cross-platform toolkit bundling a Ruby runtime, rendering, input, audio, packaging, and examples.
Why use it
Its very short edit-run loop suits solo work, jams, and code-first designers avoiding complex editors.
Where it fits
Find engines, frameworks, code libraries, version control, and production automation.
What to check
Standard is a $48 one-time desktop/web license; mobile capabilities require the annual Pro tier, eligible users may request a free license, and console access must be confirmed separately.