Roll a ball of scrap. Whatever sticks, shoots. Grow big enough and it evolves.

You are a hamster in a little cleanup bulldozer on a junkyard full of hostile machines. Push your ball over scrap and wrecked enemies and it all sticks: saw blades cut, nail guns fire, magnets pull in more junk. The bigger your ball, the tougher and deadlier it gets, and the slower it rolls. When the swarm closes in, blast off your outer layer and run.

Every level-up opens the workshop. Bolt parts into the ring of slots around your ball and plan who sits next to whom: batteries make their neighbours fire faster, fans blow nails further, saws side by side cut deeper.

Evolution: every five layers your junkball evolves, and it never goes back.

• Layer 5: an inner ring opens for helpers that power the part above them.
• Layer 10: the ring breaks free and spins round the ball on its own, so your guns sweep every direction.
• Layer 15: three of a kind in a row fuse. Saws become a circling saw ring, nail guns a scrap cannon, fans a whirlwind that drags enemies in.

Survive six minutes and scrap the tow truck.

Controls: WASD or arrow keys to roll, Space to shed your outer layer. Workshop: mouse, or 1-3, arrow keys and Enter.

Made for a game jam, theme "Evolution". Graphics are drawn by code; sound effects and the music loop are AI-generated placeholders.