Fence Off — free browser game

Fence Off is a grid-based territory game: you start on the safe stone perimeter and step inward into the open field, leaving an orange trail behind you. While the trail is open it's fragile — running into your own trail stops you, and the rabbits roaming the field will bite the open line if they touch it, costing you a life and erasing your progress on that loop. The only way to bank your work is to draw a curve through the field and return to a safe edge (the original perimeter or a previously-captured green region). When the loop closes, every interior cell with no rabbit inside turns into a cyan fence; you score +10 per fenced cell, +1 per trail step, and a quadratic bonus for big enclosures. Fence off enough to cover 75% of the field and you level up: a fresh field, one more rabbit, and a slightly faster herd. If a rabbit is trapped on the side you closed, that side stays open as the 'rabbit side' and the other side is captured instead — so closing both regions with rabbits awards nothing. You have three lives; your best score persists in the browser. Strategy: nibble small strips along the edge instead of drawing one giant loop — every extra trail cell adds risk, and quick captures push the safe edge further into the field for the next loop. Read the rabbits' wandering before you commit, and curve away from their path.