Games like Sanctum
You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.

Top 12 games similar to Sanctum
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Sanctum 2
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
ActionIndieStrategy - 2

Serious Sam HD: The Second Encounter
Serious Sam HD: The Second Encounter is a visually upgraded and fully Steam supported remake of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month!
ActionIndie - 3

Nuclear Dawn
Explore war-torn post-apocalyptic landscapes and take fight against enemies using various weapons in this FPS/RTS hybrid.
ActionStrategy - 4

Monday Night Combat
Monday Night Combat is a class-based, third-person shooter… and the most popular lethal sport of the future!
ActionIndieSports - 5

Orcs Must Die!
Slice them, burn them, skewer them, and launch them - no matter how you get it done, orcs must die in this fantasy action-strategy game from Robot Entertainment.
ActionIndieStrategy - 6

Orcs Must Die! 2
You’ve tossed, burned and sliced them by the thousands – now orcs must die more than ever before! Grab a friend and slay orcs in untold numbers in this sequel to the 2011 AIAS Strategy Game of the Year from Robot Entertainment.
ActionAdventureIndie - 7

Insurgency
Take to the streets for intense close quarters combat, where a team's survival depends upon securing crucial strongholds and destroying enemy supply in this multiplayer and cooperative Source Engine based experience.
ActionIndieStrategy - 8

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Battlezone: Combat Commander
Battlezone: Combat Commander remasters FPS-RTS classic Battlezone II with slick new visuals, brand new achievements, Steam Workshop support and much more! The solar system is at war. Take command.
ActionStrategy - 10

SENTRY
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
ActionEarly AccessIndie - 11

Super Sanctum TD
Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!
CasualIndieStrategy - 12

Attack on Toys
Relive Your Childhood Toys comes to life! Build your Army Toys, make battle scenario, watch the Toys battling each other, and customize your play with Attack on Toys Toy Box. Command your Army Toys to fight againts another toys strategically and keep them alive during battle!
ActionAdventureCasual
About imho.run
imho.run is a Steam game recommender that combines collaborative filtering (ALS / iALS / EASE / LightGCN) with content-based scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted gameplay vibes from review text. The lists you see here are generated in seed mode — anchored on Sanctum— so they answer the question “what plays like this?” rather than “what fits my library?”
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