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

Mekkablood: Quarry Assault
Single-player alternative to Syndeo-Complex — playable solo, no multiplayer required. Shares Action and Indie with Syndeo-Complex.
The Year is 2082. You play the role of Bill, a grizzled, and extremely hairy robojockey. It's up to you to take the reigns of Bill's Mekk, with your friend Rusty, to get your revenge against TorxCorp, who's trying to steal your mining claim.
- 2

TECTON
Single-player alternative to Syndeo-Complex — playable solo, no multiplayer required. Shares Action and Indie with Syndeo-Complex.
TECTON is an action shooter bullet hell set in a metropolis overrun by a rogue AI. You control a powerful robotic body as you dodge relentless projectiles and tear through enemy strongholds in your mission to reach the master AI called TECTON and stop it from taking over the city.
- 3

Invasion Resistance 2
Single-player alternative to Syndeo-Complex — playable solo, no multiplayer required. Shares Action and Indie with Syndeo-Complex.
A PC first-person shooter game with a short single-player campaign containing 13 maps and several cut-scenes.
- 4

Project RAZE: Fall of Terra
Single-player alternative to Syndeo-Complex — playable solo, no multiplayer required. Shares Action and Indie with Syndeo-Complex.
Step into a fast-paced sci-fi FPS where time replaces health. Fight through the campaign or dominate global leaderboards as RZ-01, humanity’s greatest weapon, RAZE.
- 5

Steel Wake
Single-player alternative to Syndeo-Complex — playable solo, no multiplayer required. Shares Action and Indie with Syndeo-Complex.
Steel Wake is a rogue-lite mech FPS takes place in a future locked in a perpetual war. Pilot a siege mech capable of large-scale destruction. Push through enemy defenses and cause havoc with overwhelming firepower.
- 6

Uploaded
Single-player alternative to Syndeo-Complex — playable solo, no multiplayer required. Shares Action and Indie with Syndeo-Complex.
Uploaded is a fast-paced, parkour, online multiplayer, and single-player shooter created by only one developer where you play as a robot with a human mind uploaded to it.
- 7

LvL50
Single-player alternative to Syndeo-Complex — playable solo, no multiplayer required. Shares Action and Indie with Syndeo-Complex.
KILL. DIE. LEARN. LvL50 is a fast-paced first-person shooter where you need to beat 50 levels, in a row, without getting hit. Can you become a master and escape the lab?
- 8

Androfoco
Single-player alternative to Syndeo-Complex — playable solo, no multiplayer required. Shares Action and Indie with Syndeo-Complex.
An FPS with SHOOTING COMBAT! Not just a hide and seek clone ;) Shooting your enemies a few times will not do! You must hit them with everything you've got so that they can never make it back to the stage. That is where the big money is!