Cartridge Defense – a cyberpunk‑themed tower defense where you build custom decks of collectible “cartridge” cards to spawn towers, upgrades and special abilities against waves of enemy robots. Place and upgrade nine different tower types (each upgradable to level 5), tweak their targeting systems, and force robots to reroute through your maze while collecting loot—cards, packs, targeting modules, items and resources—from defeated foes. With over 300 distinct cards, 33 levels across five zones (30–40 hours of story play), plus endless and roguelike modes and a “Sponsored Mode” for farming bonus loot, Cartridge Defense offers deep strategic variety and nearly limitless replayability.