Single-player games like RealmGuard
Below are 8 single-player Steam games similar to RealmGuard, 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 RealmGuard page.
Ranked picks
- 1

Skyward Bastion
Single-player alternative to RealmGuard — playable solo, no multiplayer required. Shares Strategy and Indie with RealmGuard.
Skyward Bastion is a roguelite tower defense game set on floating islands. Build and upgrade your defenses, unlock new strategic possibilities, and adapt your run to procedurally expanding maps.
- 2

Deck Defense
Single-player alternative to RealmGuard — playable solo, no multiplayer required. Shares Strategy and Indie with RealmGuard.
Tower defense meets deck building in Deck Defense. Defending against the blobs is no easy feat. Will you prioritise fortifying your tower defenses or expanding the map? Build your deck with over 75 cards to choose from.
- 3

Wandering Monolith: Rogue TD
Single-player alternative to RealmGuard — playable solo, no multiplayer required. Shares Strategy and Indie with RealmGuard.
You are the Wandering Monolith, falling from the sky. Summon towers, expand the board, defend your core, and build your deck of upgrades to conquer countless worlds.
- 4

Heatspire
Single-player alternative to RealmGuard — playable solo, no multiplayer required. Shares Strategy and Indie with RealmGuard.
Build devastating chains in this satisfying Connect-Four roguelike. Battle drunk ogres and loud knights, stack run-defining charms, drink powerful brews, and push your luck for explosive combos.
- 5

Castella
Single-player alternative to RealmGuard — playable solo, no multiplayer required. Shares Strategy and Casual with RealmGuard.
Castella is a Tower Defense Rogue-like, where you will build a fortress to defend yourself from Hordes of monsters besieging your Castle. During the game you will unlock and upgrade a great variety of Towers and Buildings. You will build walls to block the path and defend your resources and Castle.
- 6

Withering Age
Single-player alternative to RealmGuard — playable solo, no multiplayer required. Shares Strategy and Indie with RealmGuard.
Withering Age is a real-time strategy roguelike set in a dark fantasy, medieval world brimming with magic, danger, and decay. Build and expand your kingdom, train loyal troops and mighty champions, and defend your lands against relentless hordes.
- 7

Rogue Realm: Guardian Grids
Single-player alternative to RealmGuard — playable solo, no multiplayer required. Shares Strategy and Indie with RealmGuard.
Rogue Realm: Guardian Grids is a medieval fantasy blend of tower defense and roguelike progression. Build defenses on a grid, manage resources, and survive ever-evolving enemies.
- 8

Bloomtide
Single-player alternative to RealmGuard — playable solo, no multiplayer required. Shares Strategy and Indie with RealmGuard.
A 9×9 board × roguelike deckbuilder × explosive multipliers. Reshape your pool with daily 3-picks. Chain symbol combos through an event queue, and push your build until the numbers break. From the 12-rent campaign to endless score-attack — see how far one good build can go.