Feral junk-machines march the floor line toward your home reactor.
Your defenders are old mechs: they jam, overheat and
rust until they seize solid.
Keep the oil-can swinging, parts-swap upgrades,
and build beside the conveyor — it feeds their ammo.
On the last wave, cannibalize one dead mech: its guts revive the other three.
1-6 tools · tap/click build & service · 6 Salvage sells (50%) · SPACE next wave early (bonus scrap)