So just for the record, I didn't spend two years laboring away just to get from a screensaver to an unfinished game-- there's a lot of not-working I did on this before it could get to this point.  (Looking at my personal commit history I apparently put it down for an entire year at one point!)

But anyway, at long last, Bunny Boink Terrarium has a game download!  0.1.0 is the first version to actually have game-like features such as creating custom bunnies with names and sending them into the terrarium.  You can also save and load (although there's only one save file), and change the speed of the simulation with the time widget.  You can also right-click to direct the bunnies around and nudge their state behaviors.

Hopefully the next update will be a lot faster!  The game is definitely more interesting to work on now that I've got some more experience in godot under my belt, and hopefully it will be fun to play with even in its current state!  Thanks to everyone who downloaded and commented on the screen saver, it was a major factor in getting me to this point that I knew there were at least a few folks out there who enjoyed what I had already working!