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
Botanical TD
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Defend against evil snails with a variety of plants in this Tower Defense while YOU have to make constant decisions how your enemies get stronger.
- 2
Planet TD
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
6 different types of towers! 4 planets with different characteristics! 25 different enemies. Drones, Tanks, Biorobotic enemies and many different ground and air vehicles! Snowy and Glacial maps, Desert and Arid lands! Prepare to defend the solar system against invaders!
- 3
Path of Insanity
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Path of Insanity is side scrolling based strategy game in a land of maddness where the unbelieveable becomes believeable. Arm yourself with creatures of absolute stupidity and claim victory.
- 4
Summer of Hengyang in 1944
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
The game is set in the summer of 1944 during the defense of Hengyang, China. General Fang leads the Tenth Army with 17000 soldiers to resist 110000 Japanese soldiers for 47 days.
- 5
Countermeasure Pioneers: Modern Drone Battlefield
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
"Countermeasure Pioneers: Modern Drone Battlefield" is an instant strategy shooting game. Players need to operate precisely, controlling soldiers to release specially-made drones equipped with net guns to capture enemy drones and disable them.
- 6
Controware
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy with Radiant Defense.
Controware is a game that will take you into the fascinating world of space warfare and allow you to become a real warlord.
- 7
Xeno Command
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy with Radiant Defense.
Defend galaxy against Alien invasion in the RTS offline game with roguelike fun
- 8
Ancient Wars: Sparta HD
Single-player alternative to Radiant Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Radiant Defense.
Relive the epic battles between Spartans, Persians, and Egyptians in Ancient Wars: Sparta HD. Enjoy HD graphics, asymmetric civilizations, enhanced campaigns, new maps, smarter AI, and a revamped multiplayer mode. Forge your empire, master warfare, and make history in the Ancient World!
- 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!