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
Rogue Space Convoy
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Rogue Space Convoy is a roguelite space action shooter where you pilot a fighter, build a convoy, and choose branching encounters across five hostile passages. Disable enemy cruisers, salvage upgrades, and keep the Ark alive long enough to reach the gate.
- 2
Neon Breaker: Endless Arcade
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Blast your way onto the leaderboards in a twin-stick arcade shooter built around rapid destruction, evasion, kill combos and overwhelming firepower. Fight escalating fleets, merge power-ups and face 20+ unique bosses solo or in co-op. Play roguelike Anomaly runs that stack risk-reward mutations.
- 3
Dead Broke
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
An arena roguelite where money is your life, your ammo, and your currency. Shoot, gamble, and survive in a casino from hell: every bullet costs, every coin saves you. 13 characters, 5 endings, and local co-op. The House always wins... until you stop owing it.
- 4
BSG: Big Space Guns
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
BSG: Big Space Guns is a coop bullet hell roguelike where you step on giant buttons to activate cannons while you dodge bullets.
- 5
Gunblade Ranger
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
An action shooting Roguelite focused on relentless attacks and brutal executions. Fight through the wasteland, execute enemies to restore ammo, collect weapons and mutations, and create your own killing build. Local 2 player co-op supported.
- 6
Adventure Jam
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Adventure Jam is a level-based adventure game featuring TPS, Roguelike and RPG. Combine Gun in surprising ways to experience diverse Build gameplay and explore procedurally-generated levels. Fighting through hordes of frenzied monsters – with your friends, or on your own.
- 7
Tank Lore
Single-player alternative to Underwater DuO — playable solo, no multiplayer required. Shares Action and Indie with Underwater DuO.
Tank Lore is stylized action rogue-lite bullet-hell dungeon crawler that can be played solo or co-op where you play as legendary tank heroes fighting in a rebellion against an evil empire.
- 8
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!
- 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!