Tower Defense Co-op & RTS
Rocks drift in from every side. Build a fleet of little ships, post them around your station and break the rocks before they hit. Hold the line through the campaign with up to three friends, or take your fleet across the map and bring down an enemy base in Siege.
Android · Free · Campaign solo or co-op for 2–4 · Siege 1v1 and 2v2
Two ways to play
Defend
Twelve levels on Normal, Hard and Extreme. Waves of rocks come for your station; your fleet breaks them up before they land. Play it alone, or online with up to three friends around one home world.
Solo · Co-op for 2–4Attack
A strategy mode on a map of circles. Warp your fleet from circle to circle, rebuild derelict stations into outposts, and destroy the enemy's main base before they destroy yours.
Vs the computer · Vs friends · 1v1 or 2v2Online for both: open rooms, invite links and rooms that stay open between games. How multiplayer works
Campaign
Defend from every side
There's no path for the rocks to follow. They come from whichever bearings the next wave picks, and the red arrows show where. Build ships inside your command ring and post them toward the arrows. They fly out, chase, dodge and shoot on their own, and you can move any of them mid-wave.
Big rocks split when you shoot them. Break one far out and the pieces scatter wide; break it next to your station and the pieces rain down on you.
Co-op for 2–4
Every pilot runs their own station around a shared planet. Rocks that get past you hit the home world, and if it falls, everyone loses.
Research is shared: when one pilot buys Lance Mk II, every Lance on the team upgrades. Wallets aren't. Each of you earns and spends your own ore and crystal, so decide together who builds what. A win is everyone's: every pilot keeps the stars the team earned.
Boss waves
A rock bigger than your station, slow and stubborn, on a level's boss waves. Guns chip at it. Lance beams cut it deepest, so the team that saved crystal for its Lances is the team that's still standing.
From First Contact to Event Horizon, each adding a new rock, ship or twist. Win up to three stars on Normal by keeping your station healthy.
The same levels, meaner. Hard starts your station damaged, with no repairs or shields. Extreme leaves you one hit from gone, in one continuous wave.
Stars from the campaign buy permanent perks on four branches, each rank opening the next, with a bright star at the end of each route. Refund any time.
Wins pay cores. Spend them mid-fight, solo or in co-op, on six one-shot powers, from a Strike missile to the Nova that wipes the field.
Siege
Your main base sits at one end of a map of circles, the enemy's at the other, and derelict stations wait in between. Build a fleet, push it across the map one circle at a time, and bring down their main base before they bring down yours.
Three maps: Small, a row of three circles; Medium, two lanes and a middle; and 2v2, with two bases a side.
Ships warp along the links between circles, one jump at a time, no skipping. They arrive shielded for a few seconds, so an attack can settle in before the defence opens up.
Send a mender to a derelict and it rebuilds it into your outpost, with its own command ring, gun and hangar. The mender goes into the build. Every circle you hold builds ships.
Each circle has its own planet. Home pays steadily, the side circles are rich in ore, the middle is rich in crystal and fought over. Miners work the planets of the circles you hold.
Waves of rocks keep coming in the background, at both of you. Send the whole fleet out and your base takes the next wave alone.
After about fifteen minutes the waves come faster and bigger, and no station can be repaired. Two players who only defend don't stall for ever.
A destroyed outpost turns derelict again, for anyone to rebuild. The game ends when a main base falls. In 2v2, a side loses when both its bases are down.
Multiplayer
Co-op and Siege both play online. No accounts: pick a pilot name and go.
The room list shows the open rooms: who's hosting, what it plays and the seats left. Tap Join. Or make your own, listed for anyone or private behind a four-letter code.
Invite shares a link to your room. On an Android phone with the game it opens straight into the room; without it, the link shows the code and how to get the game.
Everyone taps Ready, then the host starts. In a co-op room the host picks a level everyone has opened, so nobody gets dragged ahead of their own campaign.
After a game, everyone lands back in the same room for the next one. Co-op picks the next level after a win; a loss keeps the same one for another try.
The fleet
Mk II makes a class stronger. Mk III makes you choose: each class has two specs, and the one you research applies to every ship of that class.
Fast, cheap, your first line. Mk III: Swarm, a triple spread shot, or Seeker, homing missiles.
Shells that burst on impact. Mk III: Barrage, three shells a salvo, or Graviton, a huge burst that slows rocks.
A long-range beam. Mk III: Piercer, hits every rock in line, or Overcharge, one massive long-range hit.
Your station never heals on its own. Menders do, and in Siege they rebuild derelicts. Mk III: Aegis shields the station, or Field repairs everything nearby.
Flies out past your defences to mine crystal, which pays for the best research. Mk III: Hauler, triple cargo, or Armored, a heavy hull and its own gun.
Know your rocks. Iron shrugs off guns but not beams. Crystal rocks shatter under bombs. Comets are too fast for bombs, but missiles catch them.
Screenshots
Three pilots against a Colossus
Siege: two lanes and a middle, every planet its own mix
Four stations, one home world
Siege 2v2: you and an ally against two
Rocks from every side
Twelve levels on Normal, Hard and Extreme
Asteroids Siege is coming to Google Play. Before launch we're running a beta on Android. Email us the Google account address on your Android phone and we'll add you to the tester list.
Email to joinThe game is free. Ads play only when you tap for one, for a second chance or extra cores, and every purchase is optional. We only use your address for the invite.
