Take care of a family of cute bunnies and keep them happy and well-fed. Buid a nice play
environment for them out of cardboard boxes, so they won't get bored. Watch them play, sleep, make binkies and slip in the snow.
Stack the boxes sky high and build a real fortress!
Happy Usagi no Yuki Fortress is a sandbox game,
without a win condition (The game continues forever). "Usagi" is Japanese for bunny, and "Yuki" is Japanese for snow!