Single-player games like Underwater DuO
Below are 9 single-player Steam games similar to Underwater DuO, 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 Underwater DuO page.
Ranked picks
- 1
Cosmic Tails
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Become the Cat Bounty Hunter. Blast off through deep space as you decimate hordes of space creatures with bounties on their heads. Upgrade unique cat-themed abilities, unlock pulverizing weapons, and survive until your contract expires -- or join the ranks of fallen bounty hunters before you.
- 2
Tiny Bomber
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Survive the countdown in a fast-paced vertical bullet-hell roguelite. Collect coins to extend your run, graze bullets to trigger aircraft-specific boosts, build wild upgrade combos, and push toward the final boss.
- 3
Chicken Must Fry
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Casual with Underwater DuO.
Chicken Must Fry is a survivor-like game where you play as a raw chicken refusing to be fried, wiping out monsters from the ruthless Frying Empire. Combine various skills and items, upgrade your characters, and survive the endless waves of enemies!
- 4
Void Strike
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action with Underwater DuO.
Shred endless waves of hostile spaceships in a 1-bit arcade survival roguelite. Build absurd weapon combos, unlock pilots, upgrade your fighter, and survive escalating dogfights against swarms, elite enemies, and colossal bosses.
- 5
SUPER DEBT
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Money is your life in SUPER DEBT! Fight to survive with an arsenal of wildly different weapons and upgrades. In this intense and challenging Twin-Stick Bullet-Hell Roguelike everything costs money, and we mean everything!
- 6
Salt VS Pepper
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Salt VS Pepper is a twin-stick shooter where you switch between black and white every 3 seconds, leaving behind an evil clone every time you switch! Use guns, walls, bowling balls, and anything in between as a weapon!
- 7
Slimewest
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Face off against an invasion of slimes in this 2D roguelite with pixel art graphics. Play alone or with up to 4 friends and save the city from the devouring attack of these creatures. Get your weapon ready and embark on this bang bang western style adventure. Play now and prove your mettle!
- 8
A Cat in the Cangaço
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
By day, a cat. By night, a man. A Brazilian roguelike that blends deckbuilding and auto-shooter mechanics in battles full of strategy and unpredictability. Face a fantastic sertão filled with monsters, poetry, and danger.
- 9
Cinema Simulator
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Indie and Casual with Underwater DuO.
"Cinema Simulator" is a simulation video game, here you can experience watching movies in the cinema! What do you want to see!