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
Brews & Kings
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
A roguelike medieval city builder where your whole city feeds one sprawling brewing operation. Scout for rare ingredients and resources, raise the farms, mills, and workshops that keep it running, and supply the factions you want to win over. Kings rise or fall on the strength of your beer.
- 2
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!
- 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
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.
- 5
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.
- 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
OUTWORKS
Single-player alternative to Islets Defense — playable solo, no multiplayer required. Shares Strategy with Islets Defense.
Build a towering 3D fortress and hold the line. Stack floors, raise walls, and place turrets by altitude to survive escalating swarms of ground and flying machines closing on your core — then watch one collapsing tower take everything with it. A lean, neon, code-built base-defense roguelite.
- 8
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.
- 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!