They're called the Minus world and Futurescape actually. I also really loved this game and the ending made me cry multiple times... It's a great game with a great ending and I'm glad you really enjoyed it too!
ahh those world names make sense.. futurescape for waiting too long, seeing the future where quiverpaw's dead.
yeah the ending was great! the two cats being together was overwhelmingly cute
westpaw's confidence in herself is inspiring.
OHHH the last ending's only unlocked after everything else! okay, that's great design, making sure that the player experiences it at the right time...!