Stunning update.
What's the version numbering scheme? This feels more than a slight update to 1.162 which is what calling it 1.665 implies :)
Haha, the numbering scheme is kind of whatever. As the numbers get higher they are tending to increment more slowly (I never want to run into being at 1.99999999..
The only thing that really matters is that the numbers be distinguishable to the Version Migrations system.
Speaking of which: Another change in this version is a Migration that will automatically assign Agility, Armor and Slime to your existing critters from previous versions, based on their Speed and Strength stats.