Single-player games like Orbital Tower Defence
Below are 9 single-player Steam games similar to Orbital Tower Defence, 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 Orbital Tower Defence page.
Ranked picks
- 1

VOID WARD
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Orbital Tower Defence.
A minimalist roguelite tower defense with neon aesthetics. Defend your planet against infinite waves of geometric enemies. Buy 70 upgrades, activate abilities, chain combos and grow stronger between runs with permanent upgrades. Every attempt makes you stronger.
- 2

OrbiTower
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Orbital Tower Defence.
The hungry Gooper swarm threatens intergalactic peace. Stop them! Build towers around planets and take control over their orbits. Spin them with all you’ve attached! Collect new towers, powers and upgrades to beat the onslaught of goopers and save the galaxy in this colorful Tower Defense Roguelite!
- 3

Reversed
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Orbital Tower Defence.
Build your defenses using 15 different types of blocks and survive fifteen waves. You'll earn XP for every wave you survive. Then switch sides and try to destroy your own base. The faster you are, the higher the XP multiplier. Use the XP you've earned to unlock new blocks and cards, and try again.
- 4

MageGuard Tower
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Orbital Tower Defence.
MageGuard Tower is a roguelike tower defense game where thousands of physics-driven monsters surge toward your crystal. Build, unlock, and adapt across procedurally generated maps in a relentless struggle for survival.
- 5

Everhex
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Orbital Tower Defence.
Build one tower. Hold endless waves. Spend what each wave drops on damage, crit and six weapon mounts firing at once — then bank the run into a 453-node passive tree that carries into the next. A premium incremental tower defence: no ads, no timers, no energy bars.
- 6

Meteor Spin
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Orbital Tower Defence.
Meteor Spin is a cosmic roguelike deckbuilder where slot mechanics meet planetary defense. Spin the defense slots, trigger explosive module synergies, and protect your planet from incoming meteor storms!
- 7

Repel The Rifts
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Orbital Tower Defence.
Repel the Rifts is a roguelite tower defense game where you lead a commander through an alien world, uncovering new terrain each wave, drafting powerful upgrades, and constructing defenses to hold back the chaos.
- 8

Wandering Monolith: Rogue TD
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Strategy and Indie with Orbital Tower Defence.
You are the Wandering Monolith, falling from the sky. Summon towers, expand the board, defend your core, and build your deck of upgrades to conquer countless worlds.
- 9

Space Invasion Infinite
Single-player alternative to Orbital Tower Defence — playable solo, no multiplayer required. Shares Indie and Casual with Orbital Tower Defence.
A 2D retro action rogue-like game inspired by the original Space Invaders arcade experience. Shoot down incoming alien waves and upgrade your turret. Discover and defeat bosses, and unlock permanent upgrades, turret classes, and challenging difficulty modifiers!