Co-op games like Astral Guardian
Below are 8 cooperative Steam games similar to Astral Guardian, ranked by player overlap and content similarity. Every pick supports cooperative play — online co-op, LAN co-op, or shared/split-screen — so you can play with friends right out of the box. imho.run pulls from the same Steam category data Valve uses internally, so "Co-op" here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Astral Guardian page.
Ranked picks
- 1
friends world
LAN Co-op alternative to Astral Guardian — playable with friends. Shares Strategy and Indie with Astral Guardian.
This is a voxel style sandbox game that focuses on survival. You can do anything inside and destroy any block. and cooperatively survive and fight with friends in a world. If you like playing Minecraft, this is a game you must not miss.
- 2
Reforged TD - Tower Defense
Online Co-op alternative to Astral Guardian — playable with friends. Shares Strategy and Indie with Astral Guardian.
Single or multiplayer tower defense with high replay value. Build and upgrade towers, use special items and discover the extensive talent tree for your characters and towers. Ideal for strategists!
- 3
Modiverse
Online Co-op alternative to Astral Guardian — playable with friends. Shares Strategy and Indie with Astral Guardian.
An open multiplayer sandbox game; includes tools, props, levels, NPCs, character models, game-modes and much more! Make your own using our mod kit!
- 4
Attack on Toys
Shared/Split Screen Co-op alternative to Astral Guardian — playable with friends. Shares Strategy and Indie with Astral Guardian.
Relive Your Childhood Toys comes to life! Build your Army Toys, make battle scenario, watch the Toys battling each other, and customize your play with Attack on Toys Toy Box. Command your Army Toys to fight againts another toys strategically and keep them alive during battle!
- 5
Lord Wars
Co-op alternative to Astral Guardian — playable with friends. Shares Strategy and Indie with Astral Guardian.
No tedious fog of war. Outwit foes with terrain ambushes and shifting weather, build elite armies and wrap up intense medieval RTS matches quickly.
- 6
Planetary Annihilation: TITANS
Online Co-op alternative to Astral Guardian — playable with friends. Shares Strategy and Indie with Astral Guardian.
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
- 7
Element TD 2 - Tower Defense
Co-op alternative to Astral Guardian — playable with friends. Shares Strategy and Indie with Astral Guardian.
Element TD 2 sees you combine powerful elements to create unique towers. Prove your defenses against challenging foes, and compete or cooperate with others to determine who has mastered the elements.
- 8
Night of the Dead
Online Co-op alternative to Astral Guardian — playable with friends. Shares Indie with Astral Guardian.
'Night of the Dead' is an open-world game that combines elements of exploration, tower defense, survival, and crafting. Traverse a world dominated by zombies while collecting various resources and powerful equipment. Build a fortress to survive the hordes of zombies that swarm every night!