Single-player games like Underkeep
Below are 8 single-player Steam games similar to Underkeep, 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 Underkeep page.
Ranked picks
- 1
Hold The Roost
Single-player alternative to Underkeep — playable solo, no multiplayer required. Shares Strategy and Indie with Underkeep.
Build by day. Defend by night. Command a flock of chickens in a tactical tower-defense survival game where every bird has a job. Gather resources, hatch and recruit stronger chickens, customize weapons and targeting, and outsmart predators with tricks of their own.
- 2
Sir, We Have an Orc Problem
Single-player alternative to Underkeep — playable solo, no multiplayer required. Shares Strategy and Indie with Underkeep.
Sir, We Have an Orc Problem is an incremental-style tower defense game where you face an overwhelming number of orcs. Greet them with even more bullets, bombs and lasers!
- 3
结界大阵：生灵庇护所 Warding Sanctum: Creature Refuge
Single-player alternative to Underkeep — playable solo, no multiplayer required. Shares Strategy and Indie with Underkeep.
A strategy game blending Xianxia (cultivation) elements with tower defense and settlement-building mechanics. Recruit and cultivate creatures, fuse them into formations, repel demon invasions from the outside world, and build your Creature Sanctuary.
- 4
Soul Merger
Single-player alternative to Underkeep — playable solo, no multiplayer required. Shares Strategy and Indie with Underkeep.
Soul Merger is a merge-driven auto-battler roguelite where you play an active role. Summon the souls of fallen warriors, merge them into higher tiers, and fight alongside your army to defeat waves of undead.
- 5
Hostile Architect
Single-player alternative to Underkeep — playable solo, no multiplayer required. Shares Strategy and Indie with Underkeep.
Who is the deranged mind behind those trap-filled stages from classic 2D side-scrolling games? This time, it's you. Your kingdom is being invaded by heroes. You have to construct the stages they will traverse in this fast-paced 2D tower defense game.
- 6
Royal Wars: Farm TD
Single-player alternative to Underkeep — playable solo, no multiplayer required. Shares Strategy and Indie with Underkeep.
Royal Wars: Farm TD is a tower-defense game with strategy, luck, resourcemanagement and quick-thinking mechanics. Protect your base with Towersto defeat enemies in your path before they destroy it.
- 7
Nightmare Invasion
Single-player alternative to Underkeep — playable solo, no multiplayer required. Shares Strategy and Indie with Underkeep.
Nightmare has set its sights on this world, and as the will of the world, you will rely on cards, tower defenses, and urban construction to destroy Nightmare's invasion in the dream
- 8
Towered
Single-player alternative to Underkeep — playable solo, no multiplayer required. Shares Strategy and Indie with Underkeep.
Defend the Nexus, run after run. Build under population limits, balance gold and mana, draft augments as you level, and spend gems on a permanent power-up tree in this pixel-art tower defense roguelite.