A grumpy bear has carried a lost pup to the top of a construction site. Climb four screens: sloped girders with rolling barrels and fireballs from a burning brazier, conveyor belts loaded with cement trays, elevator shafts under bouncing springs, and the rivet tower — walk over all eight rivets to bring the bear down. Jump hazards for 100, grab a hammer to smash them, and beat the bonus timer. Free, no sign-up — play right in your browser.