Castle Story Turns Co-op into a Shared Building Plan
Work with friends to build a floating-island fortress, share Bricktron crews against Corruptrons, or test your designs in a creative sandbox.
66% positive of 9,299 reviewsPlaying now: 47$9.99
Tower Defense Indie games to play together
95 Tower Defense Indie games your group can play together online, including Castle Story, Particle Fleet: Emergence, and Creeper World 2: Anniversary Edition.
All games: 24
Particle Fleet: Emergence
Build and design your own fleets and stand opposed to the Particulate in this physics/strategy/RTS/fleet hybrid. Build partially destructible and self repairing ships that interact with enemies less controlled by some scripted logic and more driven by a real time massive physics particle simulation.
92% positive of 1,202 reviewsPlaying now: 37$14.99
Creeper World 2: Anniversary Edition
Deceptively simple... amazingly deep. Creeper World 2 thrusts you into the 14th millennium fighting and enemy that flows and oozes through the terrain. Employ advanced weapons,gravity manipulating repulsors, wormhole like rifts, and your own wit against this never yielding enemy.
89% positive of 466 reviewsPlaying now: 26$4.99
Mushroom Wars 2
In Mushroom Wars 2, enemy tribes of feisty mushroom creatures face off in short but fierce RTS battles. Step into the shoes of a fearless Mushroom Commander, choose a hero to lead your army, and take control of the battlefield in a variety of multiplayer modes or challenging story campaign.
60% positive of 861 reviewsPlaying now: 2$14.99
FortressCraft Evolved!
FortressCraft Evolved is a unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly lines. Players begin by crash-landing on a strange alien world, left with only a small handful of starting machines.
71% positive of 2,653 reviewsPlaying now: 17$12.99
Craft The World
Craft The World is a unique sandbox strategy game, the mix of Dungeon Keeper, Terraria and Dwarf Fortress. Explore a random generated world populated by dangerous creatures, build a dwarf fortress, gather resources, and craft all the items, weapons, and armor you need.
87% positive of 15,139 reviewsPlaying now: 444$18.99
Dungeon of the ENDLESS Turns Every Door into a Team Decision
Join up to three friends online as your crew explores a shifting alien facility, powers rooms, builds defenses, and carries a fragile crystal to the next lift. The shared escape is tense, tactical, and shaped by a four-hero limit.
86% positive of 9,428 reviewsPlaying now: 48$11.99
PixelJunk Nom Nom Galaxy: Build a Soup Factory Together
Build a soup company with up to three online friends or one local partner in PixelJunk Nom Nom Galaxy. Explore alien planets, automate production, and compete with rival corporations for the market.
76% positive of 811 reviewsPlaying now: 4$9.99
DG2: Defense Grid 2 Makes Tower Defense a Shared Puzzle
Team up with one friend to defend power cores in DG2: Defense Grid 2. Choose fully cooperative Doubles or the more competitive Coordinated Defense, online or on one computer.
85% positive of 2,711 reviewsPlaying now: 52$9.99
Creeper World 3: Arc Eternal
Creeper World 3 is what happens when cellular automata takes over a strategy simulation. Instead of discrete units that attack your base, a fluid-like substance spreads over the terraformable terrain. Your base, your weapons, your strategy... you must adapt them all.
96% positive of 4,110 reviewsPlaying now: 181$14.99
Over 9000 Zombies!
Over 9000 Zombies! is top-down arcade action blown out of all reasonable proportions. An endless horde of zombies is coming your way, how long can you survive?
87% positive of 1,209 reviewsPlaying now: 1$2.99
Yet Another Zombie Defense
Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.
85% positive of 12,399 reviewsPlaying now: 11Free
Sanctum 2: Build a Defense, Then Join the Fight
Sanctum 2 combines tower-defense building and first-person shooting in an online campaign for up to four players. You and your friends protect oxygen-producing Cores through waves, character loadouts, and optional survival runs.
91% positive of 7,460 reviewsPlaying now: 16$14.99
CastleStorm Co-op: Two Ways to Defend the Realm
Team up with a friend in CastleStorm’s two-player survival modes: split castle defense and hero combat, or face the waves together as two heroes.
88% positive of 1,262 reviewsPlaying now: 2$9.99
Orcs Must Die! 2 turns trap defense into co-op chaos
Defend magical rifts with a friend in a two-player action tower defense game built around traps, weapons, and fast-moving orc waves.
92% positive of 12,942 reviewsPlaying now: 48$14.99
Dungeon Defenders Turns a Friend Group Into a Defense Crew
Build defenses with up to three friends, then fight beside them as monsters swarm the crystal. Dungeon Defenders mixes tower strategy, action combat, and a long trail of character and gear upgrades.
92% positive of 12,209 reviewsPlaying now: 459$14.99
Rock of Ages
A rock-solid combination of rock-rolling action, deep strategy, and captivating art and music from different ages of history, this is a game of crush or be crushed!
91% positive of 3,384 reviewsPlaying now: 9$9.99
Atom Zombie Smasher Turns Evacuation Into Co-op Tactics
Up to three players share one city map in Atom Zombie Smasher, directing a helicopter and mercenary units through short, unpredictable zombie rescues.
90% positive of 1,115 reviewsPlaying now: 12$9.99
AI War: Fleet Command Turns Co-op Into a Galactic Campaign
Join up to seven friends in a long strategy campaign against two AI empires. Expansion helps your resistance, but destroying key enemy infrastructure can draw more attention.
84% positive of 992 reviewsPlaying now: 3$9.99
Dome Keeper
Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!
92% positive of 19,291 reviewsPlaying now: 0$17.99
They Can't Stop All Of Us
D.A.B. Your foes in co-op & PvP battles. (D)efend bases with weapons and skill. (A)ttack with clever AI armies. (B)uild amazingly creative defenses.
72% positive of 1,625 reviewsPlaying now: 0Free
Rise of Legions
Rise of Legions has shut down. It was a strategy and deck building game with dynamic, tactical gameplay.
81% positive of 1,621 reviewsPlaying now: 0Free
Vectorio Classic
The original, uncompleted version of Vectorio. Claim resources, unlock new buildings, and expand your defenses as you fight back against enemy forces in the classic edition of Vectorio! Play for free now.
93% positive of 1,472 reviewsPlaying now: 0Free
Eden Rising
Brace yourself for a brand new action-packed Open World. Explore a huge world to gather materials for gear and defenses. Use everything at your disposal to defend your bases and defeat hordes of hostile monsters. Play solo or up to 8-player online!
63% positive of 1,444 reviewsPlaying now: 0Free