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

Xeno Swarm - 异虫强袭
Single-player alternative to ITZO — playable solo, no multiplayer required. Shares Action and Indie with ITZO.
"Xeno Swarm" is a hardcore side-scrolling shoot-'em-up game. Team up with your allies to battle overwhelming swarms of alien creatures, engage in life-or-death showdowns with colossal bosses on extraterrestrial battlefields, and relive the exhilarating thrill of bullet-hell mayhem!
- 2

Viral Reload EX
Single-player alternative to ITZO — playable solo, no multiplayer required. Shares Action and Indie with ITZO.
Viral Reload EX is a shoot-em-up with a dash mechanic where you shrink down to fight infections at a microscopic scale! Can you defeat the evil Kyle Kaboom before he destroys the moon?
- 3

Cerberus: Orbital watch
Single-player alternative to ITZO — playable solo, no multiplayer required. Shares Action and Indie with ITZO.
Get ready for classic top down space shooter gameplay! In near future scientists detected allien signals, you need to find out their nature.
- 4

< STRECT >
Single-player alternative to ITZO — playable solo, no multiplayer required. Shares Action and Indie with ITZO.
Control your ship and destroy all the enemies and bases that have appeared through teleportation! < STRECT > is a score-attack vertical shooter for 1 or 2 players. Enjoy simple shoot-and-dodge gameplay, rich destruction effects, and tons of hidden features.
- 5

R-Type Dimensions III
Single-player alternative to ITZO — playable solo, no multiplayer required. Shares Action with ITZO.
Building on the legacy of R-Type Dimensions and R-Type Dimensions EX, Dimensions III has been completely re-envisioned with cutting-edge visuals and sounds, expanded gameplay modes, and a range of new features designed to deliver the most definitive modern edition of R-Type’s classic era.
- 6

Space Dragons
Single-player alternative to ITZO — playable solo, no multiplayer required. Shares Action and Indie with ITZO.
Choose your spaceship and defeat the alien threat that comes from the Moon. Blast your way crushing, ripping apart and exploding hostile aliens that are taking control of powerful weapons and military technology from Earth. Find the entity that controls the threat and make it explode into blood.
- 7

Impulse Reactor
Single-player alternative to ITZO — playable solo, no multiplayer required. Shares Action and Indie with ITZO.
A deep roguelite bullet-purgatory set in a dying galaxy. Fight through swarms of alien enemies across brutal environments, build devastating weapon combos, and earn prestige to grow stronger with every run. Solo dev passion project.
- 8

CLINK
Single-player alternative to ITZO — playable solo, no multiplayer required. Shares Action with ITZO.
Gravity is a suggestion. CLINK is a fast red-vs-blue arena shooter where the walls and ceiling are drivable ground. Snipe from above, ram rivals off a wall, lay mines anywhere. Six classes, many arenas, bots that fight everywhere, online play, and a map editor.