Single-player games like Halo: Spartan Assault
Below are 15 single-player Steam games similar to Halo: Spartan Assault, 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 Halo: Spartan Assault page.
Ranked picks
- 1
Halo: Spartan Strike
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
Halo: Spartan Strike makes you a Spartan supersoldier battling evil forces. Delve into 30 challenging missions through cities and jungles using a devastating arsenal of weapons, abilities and vehicles including the iconic Warthog against the Covenant and Promethean enemies. *DirectX feature level 10 required*
- 2
Renegade Ops
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
Blast your way through enemy lines to defeat Inferno, a madman intent on global domination. Destruction just got awesome.
- 3
HELLDIVERS™ Dive Harder Edition
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
HELLDIVERS™ is a hardcore, cooperative, twin stick shooter. As part of the elite unit called the HELLDIVERS, players must work together to protect SUPER EARTH and defeat the enemies of mankind in an intense intergalactic war.
- 4
Alien Breed: Impact
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
Experience the explosive science fiction arcade-shooter that resurrects a much revered franchise in an epic single player and co-op multiplayer campaign.
- 5
Sektori
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
Sektori is an intense, fast paced twin-stick shooter infused with hard hitting techno music. A game where the high-adrenaline gameplay, visuals, and music come together to transport you into another state of consciousness.
- 6
KILL KNIGHT
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
KILL KNIGHT is an ultra-responsive arcade-inspired isometric action shooter. Condemned to eternal sufferance, deep within the voids of an eldritch arena, you must wield an arsenal of devastating weaponry to obliterate swarms of otherworldly horrors - and MASTER THE DEMON WITHIN.
- 7
Crysis Warhead®
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
Pulse-racing new installment from 2007's PC Game of the Year*: Play as Sergeant Sykes and experience a whole new side of the battle. A standard combat mission behind enemy lines becomes critical when you discover your enemies have captured something of vital importance to the ensuing war.
- 8
Halo: The Master Chief Collection
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
The Master Chief’s iconic journey includes six games, built for PC and collected in a single integrated experience. Whether you’re a long-time fan or meeting Spartan 117 for the first time, The Master Chief Collection is the definitive Halo gaming experience.
- 9
Killing Floor
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
6-player co-op survival horror at its finest! Free updates, free special events and a ridiculous amount of fun!
- 10
Call of Duty®
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
The Call of Duty® experience supports Call of Duty®: Black Ops 7, Call of Duty®: Black Ops 6, and Call of Duty®: Warzone™.
- 11
Sanctum
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
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.
- 12
TowerFall Ascension
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
TowerFall Ascension is the definitive version of the hit archery combat game. Inspired by classics from the golden age of couch multiplayer, it's a 4-player local party game centering around hilarious, intense versus matches. The core mechanics are simple and accessible, but hard to master and combat is fierce.
- 13
Crimsonland
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
Thousands of aliens, giant spiders, mutant lizards, and more are on the attack - can you survive the onslaught? Crimsonland is a top-down shooter with a touch of RPG. Unlock over 30 weapons and over 50 perks from quirky to brutal. Complete the quest and show your skills in five survival modes.
- 14
Greed Corp
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required.
Turn-based strategy at its finest.
- 15
Gatling Gears
Single-player alternative to Halo: Spartan Assault — playable solo, no multiplayer required. Shares Action with Halo: Spartan Assault.
When the Empire begins its reign of destruction in a thirst for natural resources, it’s up to Max Brawley, a retired Gatling Gear pilot, to stop them.