Single-player games like Haunt Monster
Below are 8 single-player Steam games similar to Haunt Monster, 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 Haunt Monster page.
Ranked picks
- 1
Hume Index
Single-player alternative to Haunt Monster — playable solo, no multiplayer required. Shares Action and Strategy with Haunt Monster.
As a special agent who specializes in dealing with unstable reality, you need to use your firearms, blades, and elemental reactions to eliminate mutants in an abandoned cosmo, control the source, and escape if possible. Can be played as a single player or with 2-4 players in Co-Op mode.
- 2
Sealand Survivor
Single-player alternative to Haunt Monster — playable solo, no multiplayer required. Shares Action and Strategy with Haunt Monster.
Survive on Sealand, a mysterious WWII island defense base. Face extreme weather, solve puzzles, and fight off hostile forces trying to stop you. Can you uncover its secrets and escape before time runs out?
- 3
NightRunner
Single-player alternative to Haunt Monster — playable solo, no multiplayer required. Shares Action and Indie with Haunt Monster.
Night Runner mixes coop horde survival with extraction mechanics, dungeon exploration, and tower defense systems. Inspired by Killing Floor and CoD Zombies (Tranzit), it delivers intense combat, strategic survival, and high-risk, high-reward gameplay.
- 4
Sci-Fantasy Defence
Single-player alternative to Haunt Monster — playable solo, no multiplayer required. Shares Action and Strategy with Haunt Monster.
Combine physics-based traps, weapons and magic to defend against horde of thousands enemies in this roguelike tower defense with procedurally generated levels and switching between building/combat. Do it solo in VR or with up to 4 players in one PC through local co-op.
- 5
Rotten Tide
Single-player alternative to Haunt Monster — playable solo, no multiplayer required. Shares Action and Strategy with Haunt Monster.
Rotten Tide is a horizontal 2D tower defense game where players must protect the world from the attacks of all kinds of monsters who are threatening the humans in big cities all around the world.
- 6
Animal Babysister Fighter : Zombie Coming!
Single-player alternative to Haunt Monster — playable solo, no multiplayer required. Shares Action and Strategy with Haunt Monster.
Zombies and monsters are taking over several planets in the galaxy. As a result, animals are losing their habitats. Your mission is to protect those animals. Use your spaceship to transport the threatened species to shelters on humanity's first star colony!
- 7
神经联结(Neural Nexus)
Single-player alternative to Haunt Monster — playable solo, no multiplayer required. Shares Action and Indie with Haunt Monster.
Neural Link Corporation developed a powerful AI that unexpectedly went rogue. As an employee, you must destroy the servers storing the AI's network model to mitigate the damage and uncover the reasons behind the AI's loss of control.
- 8
Defender Bros
Single-player alternative to Haunt Monster — playable solo, no multiplayer required. Shares Action and Strategy with Haunt Monster.
Prepare your defenses during the day and survive until dawn. Defender Bros is a Top-Down Tower Defense Roguelike where you play as a Soldier defending your Base. Pick between multiple abilities as you level up to increase you power, then after each run buy perks and get stronger