I've just released Rubygame 2.5.1. This version fixes two bugs, one potentially serious, and one minor.
Clock.delaywould delay forever if the delay time and granularity were very small.
Clock.delaywould always be "nice" to other Ruby threads during the final part of the delay, even if
nice = false.
Thanks to shawn42 (Shawn Anderson) for discovering and telling me about the first bug.