Single-player games like AntiCetus: Undersea Battle
Below are 8 single-player Steam games similar to AntiCetus: Undersea Battle, 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 AntiCetus: Undersea Battle page.
Ranked picks
- 1

Samurai Blitz EX
Single-player alternative to AntiCetus: Undersea Battle — playable solo, no multiplayer required. Shares Action and Indie with AntiCetus: Undersea Battle.
Unleash your inner warrior in Samurai Blitz EX, an adrenaline-fueled arcade "Slice 'em Up"! Carve through relentless waves of ferocious demons, chaining together insane air-slicing combos as you dash, slash and rack up sky-high scores.
- 2

Runnyk
Single-player alternative to AntiCetus: Undersea Battle — playable solo, no multiplayer required. Shares Action and Indie with AntiCetus: Undersea Battle.
A 2D mini action RPG about Runnyk, a viking who goes on a journey for the Four Magical Runes to find a way to save his beloved.
- 3

Below The Ocean
Single-player alternative to AntiCetus: Undersea Battle — playable solo, no multiplayer required. Shares Action and Indie with AntiCetus: Undersea Battle.
Dive into the world 'Below the Ocean'! Master thrilling moves like tether-swinging, bubble-jumping, bungee-bouncing, and sling-shot in a mesmerizing underwater adventure. Solve intriguing puzzles and seek hidden treasures. Are you ready to embark on this unforgettable journey?
- 4

The Swordfish: Knight of the Deep
Single-player alternative to AntiCetus: Undersea Battle — playable solo, no multiplayer required. Shares Action and Indie with AntiCetus: Undersea Battle.
Embark on an epic adventure as a sword-wielding fish and restore order to the kingdom's depths. Explore an ocean world full of adorable characters, menacing foes, and hidden wonders.
- 5

Boss Rush: Mythology
Single-player alternative to AntiCetus: Undersea Battle — playable solo, no multiplayer required. Shares Action and Indie with AntiCetus: Undersea Battle.
Boss Rush: Mythology - This is an action game in which you have to fight various creatures and gods from Greek, Scandinavian, Slavic and Egyptian mythologies.
- 6

Cursed Castilla (Maldita Castilla EX)
Single-player alternative to AntiCetus: Undersea Battle — playable solo, no multiplayer required. Shares Action and Indie with AntiCetus: Undersea Battle.
Cursed Castilla (Maldita Castilla EX) is an arcade action platformer full of creatures from medieval myths from Spain and the rest of Europe, as well as from chivalric romances. The extended version of the classic Maldita Castilla, originally created by the indie Locomalito.
- 7

FLARE NUINUI QUEST
Single-player alternative to AntiCetus: Undersea Battle — playable solo, no multiplayer required. Shares Action and Indie with AntiCetus: Undersea Battle.
Play as Shiranui Flare in this retro action platformer, wielding her dual pistols, as you explore the world on a quest to save your friends!
- 8

B.I.O.T.A.
Single-player alternative to AntiCetus: Undersea Battle — playable solo, no multiplayer required. Shares Action and Indie with AntiCetus: Undersea Battle.
Intense 2D action-platformer set in a mining colony infected by an alien plague. In B.I.O.T.A. you can choose your hero, fight gruesome monsters, and customize your 8-bit retro experience with swappable 4-color palettes.