Single-player games like Radiant Defense
Below are 12 single-player Steam games similar to Radiant Defense, 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 Radiant Defense page.
Ranked picks
- 1
Defend Your Life: TD
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Defend Your Life! Is tower defense set in human body where players are fighting against villain hordes of viruses and bacteria. Levels and units correspond to reality of human anatomy.
- 2
Broken Universe - Tower Defense
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Get ready to rethink all your defense strategies! Build barricades to stop monsters, or lure them into a maze and attack. A variety of stages that change each time depending on how you play them.
- 3
Unstoppable Gorg
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
- 4
No Creeps Were Harmed TD
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy with Radiant Defense.
Employ lethal turrets, traps, and gadgets to defend against an onslaught of evolving creeps! Step into a twisted, hyper 3D, mind bending realm. Upgrade and adapt your defenses. Become a master maze crafter. Collect bizarre artifacts. Rush creeps for lucrative rewards, and succumb to greed!
- 5
Minimalist Tower Defense
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Collect resources and establish a defense line before dark And then Facing countless enemies
- 6
Beware Planet Earth
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Beware Planet Earth! is a beguiling mix of classic tower defense and time management coming to PC via Steam for the first time. Save your cows from the Martian invasion by building an effective defense using towers, traps and objects, and also by firing your Zapper directly at the invading force of little green men!
- 7
Prime World: Defenders
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.
- 8
Infested Planet
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
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.
- 9
REDCON
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Command your own fortress in FTL-like real-time battles! Crush the enemy fortress with unrelenting bombardment or seize it with carefully executed invasion.
- 10
Reaper - Tale of a Pale Swordsman
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Indie with Radiant Defense.
Enter the world ripe with magic and monsters. Become the Black Swordsman and slay thousands of enemies in an epic action RPG!
- 11
Ritual: Spellcasting RPG
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Indie with Radiant Defense.
Watch the chaos unravel as you blaze through hordes of monsters in a unique spell-casting action RPG.
- 12
Flying Tank
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Indie with Radiant Defense.
Get into your Flying Tank and shoot 'em up like it's the good old days! Kill strange bosses, drop bombs from above and build an arsenal of fun, powerful weapons. Reclaim the stolen Earth - alone or with a friend - in a rich action-packed side-scrolling shmup!