PICO-8 + sheep + puzzle = <3
A very fun game with beautiful, minimalist art. In the last level I though I needed to contain the sheep with the boulders to be sure I had enough time to go the portal, but there wasn't enough boulders… So this part is a bit luck-based: you just hope the sheep won't leave the zone before you access the portal.
This game has one flaw, though: it's too short!
(and sheep going out of the screen is a bit confusing too)