Single-player games like Royal Defense
Below are 12 single-player Steam games similar to Royal 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 Royal Defense page.
Ranked picks
- 1
Fort Defense
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal Defense.
All hands on deck! Pirate armada dead ahead! Take part in an uncompromising struggle repelling freebooters' assaults. Watch out, the enemy may catch the tide for ruining your fortress. Build towers, collect crystals, upgrade spells and believe in your victory!
- 2
Kingdom Rush - Tower Defense
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy with Royal Defense.
Get ready for an epic journey to defend your kingdom against hordes of orcs, trolls, evil wizards and other nasty fiends using a vast arsenal of towers and spells at your command!Fight on forests, mountains and wastelands, customizing your defensive strategy with different tower upgrades and specializations!
- 3
Day D: Tower Rush
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal Defense.
Onwards to the past! Learn the real power of science! Help the professor and his loyal companion deal with hordes of dinosaurs.
- 4
Iron Sea Defenders
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal Defense.
Man the guns! The enemy fleet is on the horizon! Defend your fort from attacks – show your tactical skill.
- 5
Gnomes Garden
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal Defense.
Dry summer withered the king’s beloved garden and the surrounding gardens of the kingdom alike. The ruler has fallen ill and the kingdom is in danger. Help the princess save the gardens and make the king better again.
- 6
Idle Hero TD - Tower Defense
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal Defense.
Endless idle tower defense game full of deep strategy and combat mechanics. Unlock and upgrade dozens of epic fantasy heroes to defeat an infinite swarm of enemy monsters. Strategize hero positions, synergies, and skills for an effective defense, then sit back and let the auto-battler do its thing!
- 7
Prime World: Defenders
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal 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
Idle TD: Heroes vs Zombies
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal Defense.
An endless Tower Defense game of epic heroes vs evil zombies. Unlock and upgrade countless Heroes, artifacts, and technologies to defend against the infinite zombie swarms. Strategize the most effective placement of Heroes to synergize their skills and abilities.
- 9
Medieval Defenders
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal Defense.
Defend your ancestral castle – show the invader who the master is! Build towers, save money, train your spells, and your enemy will be vanquished.
- 10
Witch Hunt
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Indie and Adventure with Royal Defense.
Witch Hunt is a challenging horror themed hunting game that takes place in the 18th century. Main focus of the game is on exploration, non-linearity, and atmosphere.
- 11
Galaxy Reavers
Single-player alternative to Royal Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Royal Defense.
This is a fun yet challenging RTS game. To survive in the vast galaxy, you need to build up your own fleet and customize your warships. You will also learn to control them efficiently in battle to defeat your enemies, conquer planets, and expand your galactic empire!
- 12
The World II: Hunting BOSS
Single-player alternative to Royal Defense — playable solo, no multiplayer required.
Fight the largest monsters you’ve ever faced while building your destiny as the greatest Hero in the world. China’s biggest Action game series is now available in the west.