Single-player games like Spoids
Below are 8 single-player Steam games similar to Spoids, 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 Spoids page.
Ranked picks
- 1
Sanctum 2
Single-player alternative to Spoids — playable solo, no multiplayer required. Shares Action and Strategy with Spoids.
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
- 2
2112TD: Tower Defense Survival
Single-player alternative to Spoids — playable solo, no multiplayer required. Shares Action and Strategy with Spoids.
Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi adventure.
- 3
Anomaly: Warzone Earth
Single-player alternative to Spoids — playable solo, no multiplayer required. Shares Action and Strategy with Spoids.
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
- 4
Infested Planet
Single-player alternative to Spoids — playable solo, no multiplayer required. Shares Action and Strategy with Spoids.
Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.
- 5
Defense Grid: The Awakening
Single-player alternative to Spoids — playable solo, no multiplayer required. Shares Strategy and Indie with Spoids.
Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.
- 6
Mars or Die!
Single-player alternative to Spoids — playable solo, no multiplayer required. Shares Action and Strategy with Spoids.
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.
- 7
Iron Brigade
Single-player alternative to Spoids — playable solo, no multiplayer required. Shares Action and Strategy with Spoids.
Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!
- 8
SHOOPER NOVA
Single-player alternative to Spoids — playable solo, no multiplayer required. Shares Action and Strategy with Spoids.
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!