Koral

Underwater puzzle game about guiding a current to revive reefs

Carlos Coronado · Released May 16, 2019

Reviews: Very Positive; 82% of 390
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 29, 2026
Steam Deck: Untested
Last update on Steam: 7 years ago; May 24, 2019
Minimum PC: GeForce GTX 750 Ti; 2 GB RAM · 1 GB disk; Full requirements

What is Koral?

Koral is an underwater puzzle game where you control a sea current to restore coral reefs. Across 15 sea environments, you carry healing energy between corals, interact with marine life to solve puzzles, and search for optional collectibles.

For you if...

+you enjoy gentle exploration and light puzzle solving
+you like learning about oceans and human environmental impact

Not for you if...

−you want a campaign lasting more than a few hours

What players say

82% of 390 reviews are positive

Players praise the underwater scenery, lighting, music, and ocean sounds. The most common complaint is that timed puzzles interrupt the relaxed pace; some players also find the levels repetitive.

Screenshots and trailer

Koral system requirements

Minimum: GeForce GTX 750 Ti, 2 GB RAM, 1 GB of disk space.

As published by the developer.

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Minimum

OS: Windows 7 SP1 64bit, Windows 8.1 64bit Windows 10 64bit
Processor: Intel Core i3-2100 / AMD® FX-6300
Graphics: NVIDIA® GeForce GTX 750 Ti / ATI Radeon HD 7950
Memory: 2 GB RAM
Storage: 1 GB available space
DirectX: Version 9.0c
Notes: Controller support: Microsoft Xbox ® Controller for Windows® (or equivalent) recommended

OS: Windows 7 SP1 64bit, Windows 8.1 64bit Windows 10 64bit
Processor: Intel Core i7-3770 / AMD® FX-8350
Graphics: NVIDIA® GeForce GTX 970 / ATI Radeon R9 series
Memory: 4 GB RAM
Storage: 1 GB available space
Notes: Controller support: Microsoft Xbox ® Controller for Windows® (or equivalent) recommended

Does Koral have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Koral run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 17
Steam features: Family Sharing, Trading cards
Languages: Full audio: English, French, German, Spanish - Spain, Japanese, Korean, Portuguese - Portugal, Russian, Simplified Chinese.

Does Koral use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam