Bugs. Billions of Bugs.

The mining colony has ore. The bugs have an appetite. You have an orbital station, an irresponsible quantity of firepower and one simple order: keep the colony off the menu. Build towers. Call strikes. Burn the sky. Survive swarms of billions of bugs in a tower defense built around huge battles, persistent progression and increasingly excessive solutions. The only good bug is a dead bug. Would you like to know more? BILLIONS OF BUGS. GIVE OR TAKE. Workers flood the battlefield. Armored grunts smash through kill zones. Darts skitter past your defenses. Spitters attack from range. Skyrays ignore your carefully prepared ground defenses. Colossi refuse to die. Queens arrive to ruin everybody’s day. Kings mean it's over. Fortunately, you have guns. Lots of guns. Build during the calm, then watch the swarm pour across the map. Reinforce chokepoints, replace destroyed positions and adapt before the next wave turns your perfect defense into a cautionary tale. DEFEND THE COLONY TOGETHER Play solo or bring up to three fellow citizens into 2–4 player Steam co-op. Host a friends-only or public lobby, invite through Steam or jump into Quick Match. Fight together across campaign battlefields, custom maps and subscribed Workshop creations. Share the battlefield. Split the spoils. Bring your own unlocks. Try not to blame each other when the eastern wall collapses. A FULL CAMPAIGN Fight through 26 handcrafted battlefields, each with its own paths, chokepoints and tactical problems. Every map is a new defensive puzzle. Seal the outpost, unlock the next deployment and push deeper into a campaign where the bugs grow meaner and your arsenal grows much, much louder. INFINITE PROCEDURAL DEPLOYMENTS Enter SURGE for a newly generated battlefield every run. Random layouts, changing nest positions and unpredictable geometry force you to build a fresh defense instead of repeating the same winning pattern forever. The war continues for as long as you do. BUILD YOUR OWN BATTLEFIELDS Open the built-in map editor and paint the warzone yourself. Create walls, carve paths, position nests, test routes and build anything from a carefully balanced challenge to an absolute tactical nightmare. Save your creations locally, publish them to Steam Workshop and subscribe to maps built by other players. Then defend them alone or bring them into co-op. EIGHT TOWERS. SEVEN WAYS TO RUIN A BUG’S DAY. Build an arsenal of: Gatling turrets Acid sprayers Plasma cannons Cryo towers Sniper emplacements Mortars Tesla towers Flame turrets Then call in the heavy equipment: Orbital strikes Napalm Cryo-EMP Acid rain Ion storms Gravity wells Bait drops When the chokepoint fails, remember: you still have the high ground. The very, very high ground. A MASSIVE UPGRADE TREE Every deployment strengthens the next. Harvest ore, earn gems and advance through 165 persistent upgrades covering towers, orbital powers and prestige bonuses. Unlock new weapons. Specialize each tower through multiple upgrade paths. Improve your starting economy, reinforce your defenses and turn yesterday’s desperate last stand into tomorrow’s routine pest control. Lost the run? The bugs may have won the battle, but they still funded your upgrade budget. KNOW YOUR ENEMY The Bug Index tracks seven enemy species, their armor, their behavior and the towers best suited to killing them. Learn what flies, what spits, what charges and what simply refuses to stop moving. Then build the correct counter. Or use more napalm. Both are valid strategic doctrines. AROUND 60 HOURS OF MUSIC Defend humanity to a colossal 986-track soundtrack spanning roughly 60 hours. Skip tracks, control the volume or let the soundtrack carry you through a campaign, a co-op deployment or one more procedural run that definitely will not last until sunrise. DO YOUR PART Solo play and 2–4 player Steam co-op 26-map campaign Infinite procedural SURGE deployments Built-in map editor Steam Workshop publishing and subscriptions Swarms of billions of bugs 8 towers and 7 active abilities 165 persistent upgrades Gem-powered prestige progression Bug Index with enemy counters Roughly 60 hours of music One mining colony with an extremely serious pest problem Place turrets. Call strikes. Kill bugs. Service guarantees citizenship!