Single-player games like Islets Defense
Below are 9 single-player Steam games similar to Islets 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 Islets Defense page.
Ranked picks
- 1
Rogue Kingdoms
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Classic tower defense meets roguelike adventure where you control the hero! Dive into procedurally generated levels filled with unique waves of enemies. Create powerful synergies with a variety of game-changing skills, relics, weapons, and traits to defend your kingdom. Every run is a new challenge!
- 2
DeckTerra
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
A Medieval 4X Deckbuilder. Lead a kingdom as you build your deck to conquer the map and expand your rule. Develop your technology through the middle ages to improve your army of knights and keep your peasants happy. Develop your trade, religion, science, and military to conquer the continent.
- 3
Crownwarden
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Build by day, defend by night! In this story-driven city builder, take direct control of your ruler to protect the realm. Explore diverse lands, upgrade your leader's abilities, command armies against monstrous hordes, and uncover the dark secrets of your lineage.
- 4
Kings of Cratia
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Kings of Cratia offers an experience that mixes real-time strategy and first-person shooter mechanics. Build your new village and manage your resources efficiently. Be ready to defend your village every day when night falls! RTS or FPS, you are free to protect your village any way you want it.
- 5
The Merchant's Eden
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Build a medieval town around a thriving market. Defend your citizens and traveling merchants against raiding bandits. A minimalist game blending cozy city-building and intense tower-defense as you grow and protect your town.
- 6
Tiny Kings
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Tiny Kings is the whimsical medieval base builder where your dreams of building and managing a pint-sized kingdom come true! Unleash your inner ruler and build your kingdom, manage your citizens' tasks, and dominate the siege to become the ultimate ruler.
- 7
Stronghold Crusader: Definitive Edition
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Gird your loins and sharpen your steel! Besiege 20 unique enemy lords and battle friends online, in this expanded remaster of the classic 'castle sim'. Relive history with new units, opponents, visuals, audio, campaigns, skirmish trails, co-op and larger maps.
- 8
Isle of Arrows
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Isle of Arrows is a Puzzle Tower Defense game in which you build a fortress in the sky. Place towers, expand the isle, and build your own paths. Can you find the perfect spot for each tile to beat the RNG and defend against waves of invaders?
- 9
Litany
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Litany is a roguelike deckbuilder where you play multiple units, craft a hyper-synergistic group, and trigger results that should not exist. Pick a character, open boosters, upgrade cards, and craft a powerful combination that breaks the numbers!