Single-player games like Space Cycle
Below are 11 single-player Steam games similar to Space Cycle, 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 Space Cycle page.
Ranked picks
- 1
SHOOPER NOVA
Single-player alternative to Space Cycle — playable solo, no multiplayer required. Shares Indie with Space Cycle.
Craft Your Ultimate Circular Fortress! Dive into SHOOPER NOVA, where you choose props and components to build a unique fortress. Unlock combos to shape your strategy and battle style. Become an unstoppable barrage machine and obliterate waves of enemies from all directions!
- 2
Refactor
Single-player alternative to Space Cycle — playable solo, no multiplayer required.
Refactor is a hard-core tower defense game that combines modular building, route planning, and element composition.
- 3
SENTRY
Single-player alternative to Space Cycle — playable solo, no multiplayer required. Shares Indie with Space Cycle.
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
- 4
Tower Tactics: Liberation
Single-player alternative to Space Cycle — playable solo, no multiplayer required. Shares Indie with Space Cycle.
We fused deck-building roguelikes and tower defenses in a way never seen before - deploy your towers, collect valuable trinkets and cast powerful spells to defend yourself against the Salkoth!
- 5
Unstoppable Gorg
Single-player alternative to Space Cycle — playable solo, no multiplayer required. Shares Indie with Space Cycle.
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
- 6
Arms Evolution: ZOMBIE DESTROYER
Single-player alternative to Space Cycle — playable solo, no multiplayer required. Shares Indie with Space Cycle.
"Arms Evolution: ZOMBIE DESTROYER" is a unique Roguelite tower defense game. You will slaughter thousands of zombies in the game and enhance your weapon towers through build character in the RPG way. and , the game also offers an idle mode, so you can enjoy building weapons anytime and anywhere.
- 7
DG2: Defense Grid 2
Single-player alternative to Space Cycle — playable solo, no multiplayer required. Shares Indie with Space Cycle.
Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.
- 8
AI War: Fleet Command
Single-player alternative to Space Cycle — playable solo, no multiplayer required. Shares Indie with Space Cycle.
"You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their...
- 9
守卫魔兽-Guardian of Warcraft
Single-player alternative to Space Cycle — playable solo, no multiplayer required. Shares Indie with Space Cycle.
This is a summoning tower defense strategy game, with different abilities of monsters and traps, with different effects. the player will continue to upgrade while defending, Become stronger, and summoning more powerful monsters to resist the brave.
- 10
TD Tower Defense
Single-player alternative to Space Cycle — playable solo, no multiplayer required.
Build your towers according to the enmey you are facing in the wave. Upgrade your turrets to increase range, damage or rewards. Each enemy wave will be random and increases in speed and damage resistance. How far can you go!
- 11
Mech Fortress
Single-player alternative to Space Cycle — playable solo, no multiplayer required.
Mech Fortress is a sci-fi tower defense game where each turret has unique mechanics. You can freely place them on a 5×5 grid, and your goal is to eliminate all enemies!