Lots of typical anti-ruby grumbling in this so I'll just say; this looks awesome and I'm excited to give it a try. I still love programming in Ruby, and there's no reason at all why a game written in Ruby couldn't be performant. Great to see a good use of mRuby too. I've had ideas for games in the past but I know that having to learn an entirely new language, framework, and concept of development will mean that I never finish it. Having an option in my favourite language removes one of those barriers to entry.
Yeah, I mean, modern machines with multi cores that are standard now can simultaneously run multiple databases, IDEs, OS itself, bunch of containers, browser with zillion tabs, but can't run 2d ruby game because ruby is slow ? Riigggght.... I bet it could run performant in LOLCAT language nowdays.
