Single-player games like Swarming Planet
Below are 14 single-player Steam games similar to Swarming Planet, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Swarming Planet page.
Ranked picks
- 1
Micron Defense Force
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
A Roguelike Tower Defense in space with missions to conquer. Can you hold against the spreading alien bosses? Build and upgrade towers against the corruption. Choose your technologies and warpspeed your way to victory.
- 2
Starfall Defenders
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Starfall Defenders is a classic tower defense game that features unique towers and enemies. It also has an in-game shop system that allows players to purchase better towers, upgrade existing ones, and buy special items like the Atom Bomb, Splash Bomb, and Air Supply.
- 3
Raging Titan
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Build your towers, plan your efforts, watch out for changing paths and strike back against the alien invaders in this challenging tower defense game!
- 4
Taur
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?
- 5
Aliens: Dark Descent
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Drop into the gripping journey of Aliens: Dark Descent, a squad-based, single-player action game in the iconic Alien franchise. Lead your soldiers in real-time to stop a new and terrifying kind of Xenomorph outbreak on Planet Lethe.
- 6
CARNAGE OFFERING Tower Defense
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
The replicator robots are back! It's 2528. The machines are increasingly infecting the planets with genetically modified monsters. Challenge them and try to stop the onslaught. Upgrade buildings and heroes, mine resources, discover technology and fight to save humanity!
- 7
Mars or Die!
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Control two characters simultaneously! Survive, gather, collect upgrades, fight all sizes of one-eyed Martians, build defensible outposts and conquer Mars, in this glorious mix between roguelite and tower defense.
- 8
Stellar Initiative
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Stellar Initiative is a roguelike tower defense game where you land on the planet and use your orbit ship to deliver buildings and support you with fire. Complete missions, install new upgrades, discover powerful artifacts, and find the best strategy!
- 9
Gravity Mastery
Single-player alternative to Swarming Planet — playable solo, no multiplayer required.
A perspective-disorienting puzzler where the definition of down is yours to decide. Change the flow of gravity to complete each of The Adviser's varied, but logical tests. Can you become proficient enough to control the six directions and master gravity?
- 10
Cat Fish Island
Single-player alternative to Swarming Planet — playable solo, no multiplayer required.
A relaxing adventure of island fishing. Collect wood and fish to build and bait the most amazing fishing rod the world has ever seen. Start your adventure to catch the mythical fish of legend thought to be only an old tale by the island's inhabitants.
- 11
Escape Covid Camp
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Sent to camp against your will, find a way to escape to freedom. Craft goods to trade with other inhabitants for objects to use in your planned escape. Can you strategize and execute an escape plan through the perimeter of patrolling guards?
- 12
Rogue Warlords
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Combine RTS combat with roguelike elements to create highly replayable and strategic action. Summon troops and purchase stacking upgrades to create a massive army of incredibly powerful troops. How massive of an army can you create?
- 13
1000 Man General
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Command an army of 1000 troops. Create squads from a variety of unit types and give them orders to perform devastating strategic maneuvers. Then lead your army into battle and slice the opposing army into pieces.
- 14
Lucky Dungeon
Single-player alternative to Swarming Planet — playable solo, no multiplayer required. Shares Strategy with Swarming Planet.
Delve through a series of dungeons full of terrors. Fight battles by stopping a board full of your equipment and skills. Press your luck to gain battle resources, but be careful. One bad roll and you can lose everything. This game doesn't contain any real-world currency gambling/microtransactions.