Single-player games like Ultra Mega Planet Battles
Below are 8 single-player Steam games similar to Ultra Mega Planet Battles, 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 Ultra Mega Planet Battles page.
Ranked picks
- 1

SUPERVERSE
Single-player alternative to Ultra Mega Planet Battles — playable solo, no multiplayer required. Shares Action and Indie with Ultra Mega Planet Battles.
SUPERVERSE is a fast-paced, action-packed space shooter that launches you into an ancient network of interconnected universes. Your mission: travel back through space-time and prevent the extinction of humanity.
- 2

Lonefield Evacutation Survivor
Single-player alternative to Ultra Mega Planet Battles — playable solo, no multiplayer required. Shares Action with Ultra Mega Planet Battles.
Lonefield Evacuation Survivor is a... survivor in which you play as a ship facing an alien incursion. Destroy your enemies, collect bolts and upgrade your ship to survive long enough and escape. Play alone or with up to 3 friends in local multiplayer or with Remote Play Together for online gaming.
- 3

ANIQUILATION
Single-player alternative to Ultra Mega Planet Battles — playable solo, no multiplayer required. Shares Action with Ultra Mega Planet Battles.
Twin Stick Shooter Multiplayer Action Game set in small planets that can be terraformed as you play! in which not only your shoots, but also the enemies and planet environment are your weapon!
- 4

Assault Android Cactus+
Single-player alternative to Ultra Mega Planet Battles — playable solo, no multiplayer required. Shares Action and Indie with Ultra Mega Planet Battles.
Assault Android Cactus is an intense arcade style twin stick shooter - pick from one of nine unique synthetic heroines and blast your way through overwhelming robots hordes to save the ship from its own workforce. Supports single player and local co-op game modes.
- 5

HELLDIVERS™ Dive Harder Edition
Single-player alternative to Ultra Mega Planet Battles — playable solo, no multiplayer required. Shares Action with Ultra Mega Planet Battles.
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.
- 6

Raiden IV x MIKADO remix
Single-player alternative to Ultra Mega Planet Battles — playable solo, no multiplayer required. Shares Action and Adventure with Ultra Mega Planet Battles.
Buckle up and blast off with Raiden IV x MIKADO remix! This classic arcade shoot ‘em up comes fully equipped with new music, battle modes, vertical screen play, and more!
- 7

Stardust Galaxy Warriors: Stellar Climax
Single-player alternative to Ultra Mega Planet Battles — playable solo, no multiplayer required. Shares Action and Indie with Ultra Mega Planet Battles.
Stardust Galaxy Warriors: Stellar Climax is a fast-paced couch co-op action shooter with SHMUP/Brawler gameplay and RPG elements. Choose your mechs, weapons & upgrades then soar through space, defeat evil & save the future... from itself!
- 8

Beat Hazard 2
Single-player alternative to Ultra Mega Planet Battles — playable solo, no multiplayer required. Shares Action and Indie with Ultra Mega Planet Battles.
Experience your music collection as never before with this intense music driven arcade shooter. Each of your songs will have its own unique ebb and flow based on the music.