Single-player games like Ozone Guardian
Below are 9 single-player Steam games similar to Ozone Guardian, 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 Ozone Guardian page.
Ranked picks
- 1
Lost Galaxy: Survivors
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Casual with Ozone Guardian.
Defend massive interdimensional portals against relentless alien swarms in this fast-paced sci-fi top-down survival shooter.
- 2
Battle Tracks
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Indie with Ozone Guardian.
Unleash mayhem in Battle Tracks, a top-down action-adventure game with strategy and puzzle elements. Confront waves of enemies, play with or challenge friends, explore six unique worlds, and earn stars to advance through uncharted territories.
- 3
Line Defense
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Indie with Ozone Guardian.
Move or die. Dodge, dash, and build powerful combos to survive relentless enemy waves in this fast-paced arena survival game. Play solo or in chaotic 4-player local co-op.
- 4
Larva Mortus
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Indie with Ozone Guardian.
Larva Mortus is a fast-paced hack and slash top-down shooter. As an agent specializing in exorcism, you are tasked to hunt monsters of the supernatural in a dark, ominous, and randomly generated atmosphere full of undead, terrifying and demonic nightmares.
- 5
Space War: Infinity
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Indie with Ozone Guardian.
Vertical semi-procedural shmup with upgrades, real-time enemy waves, and infinite replayability. Level up your ship, unlock 20+ weapons, defeat 5 bosses, and survive endless bullet-hell combat.
- 6
Chippy
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Indie with Ozone Guardian.
Chip destructible bosses apart pixel-by-pixel in this twin-stick bullet-hell shooter.
- 7
Stellar Interface
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Indie with Ozone Guardian.
Run through the universe in this rogue-like-ish space-shooter. Discover the numerous perks/consumables and their synergistic effects. Explore the randomly-generated galaxy to find merchants, unlock spacecrafts, collect Cartridges and checkmark your kills of the various galactic overlords.
- 8
Time Wasters
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Indie with Ozone Guardian.
Time Wasters is a space shooter bullet heaven roguelite. Equip and upgrade weapons, destroy swarms of enemies, and collect Time & Space Cubes to bend the timeline to your advantage.
- 9
Colossal Saga
Single-player alternative to Ozone Guardian — playable solo, no multiplayer required. Shares Action and Indie with Ozone Guardian.
Play with a variety of unique characters to conquer your friends or enemies in Versus, Survival and Dungeon mode, in this 1-4 players, couch coop action fighting game!