Single-player games like Hollow Signal
Below are 9 single-player Steam games similar to Hollow Signal, 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 Hollow Signal page.
Ranked picks
- 1

UNIT-5000
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action and Indie with Hollow Signal.
UNIT-5000 is a top-down extraction roguelite bullet hell where you build a combat mech and fight alien invaders. Experiment with weapons and modules, face hordes and multi-phase bosses, extract resources before a run goes wrong, and use them to unlock deadlier builds for the next fight.
- 2

Scrapstorm
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action and Indie with Hollow Signal.
A 1-4 player bullet-heaven roguelite where the whole city is hunting you. Draft cards every level until one pistol turns into a screen-clearing mess, and watch out for the traffic, the third rail and whatever is running each district.
- 3

Hotspot Earth
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action and Indie with Hollow Signal.
Environmental hazards are hitting humanity with increasing force - but you're hitting back! Defend cities, build a global movement and change society's path in this tactical horde survival arena.
- 4

Warriors of the End
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action and Indie with Hollow Signal.
Warriors of the End is a fast-paced tower-defense horde-battler roguelike. Defend the Princess against enemy hordes by strategically positioning and upgrading your towers, customize unique characters with deadly weapons and spells, discover mindblowing synergies and create game-breaking builds!
- 5

Moonbringer
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action and Indie with Hollow Signal.
Moonbringer is a fast-paced action shmup with a skill tree. Kill the waves, stack the loot and upgrade your ship. Unlock a variety of new abilities and become more powerful every run. Shoot, die, upgrade, and dive into space one more time.
- 6

Dome 3.0
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action with Hollow Signal.
DOME 3.0 is a bullet hell roguelite survival shooter. You are a ship trapped inside a dome with endless waves of enemies and 20 bosses closing in from every direction. Upgrade your ship and gear and dominate the Dome
- 7

SUPERUSER
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action and Indie with Hollow Signal.
An ASCII bullet-heaven roguelite where you stack weapon modifiers, evolve your arsenal, and fight towering bosses. Turn bullets, blades, and fireballs into cascading destruction. Experiment with powerful combinations as enemies flood the arena.
- 8

Fortress Full Fury
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action and Indie with Hollow Signal.
A bullet-heaven where every run feeds incremental permanent upgrades. Defend your fortress, harvest crystals, and climb a 500+ node tech tree until your scrappy defenses become a screen-clearing arsenal against absurd swarms.
- 9

BWAG
Single-player alternative to Hollow Signal — playable solo, no multiplayer required. Shares Action and Indie with Hollow Signal.
YOU GOTTA EAT YOUR VEGGIES!!! Now they've come for payback — took your ply, took your sheets, took your trousers. All they left was your hat, your boots and every gun in your Arsenal. "HA! Stupid Vegetables". Walk the gulch. Get it all back. And don't let them kick your butt.