Build. Fuse. Extract. A maze-tower defense of resource engines and automated fusion lanes. Route enemies through kill-zones while your economy siphons every drop of scrap and gold.
Pick a tower from the Arsenal (or press 1–8, 0/Q/W for hybrids). Click a non-path tile to place it. Watch your Gold.
Click START WAVE. Enemies path from the green Spawner to the pink Core. Defense towers auto-target; resource towers siphon Gold passively or on hits.
Click FUSE, then pick two adjacent towers whose pair maps to a hybrid: Fire+Scrap → Incinerator Forge, Slow+Crystal → Stasis Collector, Lightning+Siphon → Arc Generator, Cannon+Refinery → Bounty Mortar. Fusing is free and consumes both source towers.
Scouts (fast, low HP) · Armored Tanks (slow, tough) · Resource Thieves (steal Gold on reaching the Core instead of dealing damage). Different towers counter different threats.
Survive all 8 waves with Core HP > 0 to win. If the Core reaches 0, the run ends. Either way, your wave reached and Gold total can be submitted to the leaderboard.