Scrapwalker

A scrap shack on mechanical legs swallows scrap and abandoned machines to grow, while its mounted parts shoot the raider swarms on their own. Charge the boiler beam to clear a path, and topple giant bosses with a different gimmick each stage to absorb them. A five-stage run with permanent garage upgrades. Paid app with no ads and no in-app purchases.

• A walking fortressEach bite of scrap stacks floors and legs until a tier-5 war fortress
• Boiler beamHold to charge, release to pierce swarms and punish boss openings
• A new boss every stageCharges, shields, hooks, trains, scrap-sucking — each boss teaches something