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

Neon Swarm
Single-player alternative to NULLVECTOR — playable solo, no multiplayer required. Shares Action with NULLVECTOR.
A pure neon arcade survivor-like: dodge swarming hordes, dash through walls of bullets and forge devastating builds from 200+ synergizing items. 6 ships with unique ultimates, 8 mega-bosses, rising Threat levels, endless mode and a daily challenge.
- 2

Nova Survivors
Single-player alternative to NULLVECTOR — playable solo, no multiplayer required. Shares Action and Indie with NULLVECTOR.
A space horde-survival roguelite where the 21 ships aren't skins: each flies its own weapon, ultimate and role, so the same cards build wildly different runs. Chain evolutions and artifacts through a 100-level campaign and endless Survival, and hold out until your build breaks the game.
- 3

Cosmic Run
Single-player alternative to NULLVECTOR — playable solo, no multiplayer required. Shares Action and Indie with NULLVECTOR.
Cosmic Run is a single-player space roguelite where you battle relentless galactic enemies, strategically upgrade your ship, and help the Zogark family survive their journey across the galaxy. Build powerful combinations, adapt to chaotic encounters, and escape one broken system after another.
- 4

Super Robot Survivors
Single-player alternative to NULLVECTOR — playable solo, no multiplayer required. Shares Action and Indie with NULLVECTOR.
A Roguelite Bullet-Heaven where you rescue astronauts, repair reactors, and hack terminals while blasting hordes of robots in high-stakes, 10-minute showdowns. From the Creative Director of Destroy All Humans! 2 and co-creator of TY the Tasmanian Tiger.
- 5

Neon Pulsefire
Single-player alternative to NULLVECTOR — playable solo, no multiplayer required. Shares Action and Indie with NULLVECTOR.
Fullfill your ultimate power fantasy and defeat endless waves of enemies in this challenging sci-fi bullet-hell roguelite. Unlock unique classes and upgrades to create powerful builds as you weave your way through enemies, arena hazards and projectile assaults.
- 6

Geometry Rift: Apocalypse
Single-player alternative to NULLVECTOR — playable solo, no multiplayer required. Shares Action with NULLVECTOR.
Imagine the frenetic chaos of Geometry Wars colliding with the addictive progression of Vampire Survivors. That's Geometry Rift — a relentless auto-fire action experience where geometric enemies flood the screen and your only option is to shoot, dodge, and survive.
- 7

XENOFLEKT
Single-player alternative to NULLVECTOR — playable solo, no multiplayer required. Shares Action and Indie with NULLVECTOR.
XENOFLEKT is a roguelite space shooter where you will turn enemy bullets into armory: dash into enemy fire to parry and deflect shots, heal your ship, and trigger devastating counter-attacks. Unlock parts, plug-in unique perks with satellites, and get ready to master hundreds of deadly synergies.
- 8

Wirehawk
Single-player alternative to NULLVECTOR — playable solo, no multiplayer required. Shares Action and Indie with NULLVECTOR.
Wirehawk is a vertical shmup pairing classic vector-game aesthetics with modern, precise mouse control - a level of control and speed a gamepad simply can't match. Blast asteroids and alien waves, dodge bullet storms, slow time with stasis. Gamepad supported, autofire always on.