Still Waters is a cozy idle aquarium simulation that sits as a small, living strip of water along the bottom of your PC screen. Players manage a quiet ecosystem of fish, plants, and objects while going about their day at work, studying, or relaxing. The game blends passive observation with hands-on interaction, letting the tank run on its own or inviting direct play at any moment.
Gameplay
The core loop centers on maintaining and engaging with a desktop aquarium that operates independently in the background. Fish swim, plants grow, and the ecosystem continues without constant attention, so returning after hours reveals natural progress. Interaction happens through direct mouse controls that treat the water surface as a playable space. Users grab fish to drag or toss them, poke ripples into the water, or hold food to draw chases that sometimes send creatures leaping above the surface. Physics apply to airborne elements, allowing collisions between fish and other objects like beach balls or rubber ducks. Additional items such as anchors or kelp add variety, with kelp that can be pulled and spun. Biomes introduce different moods and creature sets, from sunlit shallows to deeper ocean layers, each with tailored inhabitants. Collection expands through a Fishipedia system where players buy eggs, acquire known species, or generate custom morphs with unique traits and behaviors. A resident cat provides further options for play, including petting, placing her in the water, or positioning her on a boat to observe the fish.
Game Modes
Still Mode offers a quieter configuration that reduces fish activity for times when focus is needed. Customization options include background fade to minimize visual clutter behind the tank, drag-and-resize tools for flexible screen placement, and a boss key that instantly hides the entire aquarium. Stream integration connects to Twitch and Kick, allowing chat participants to appear as fish in the tank and influence events through votes or biome changes. These elements support both solitary idle play and light community participation without requiring active management at all times.
Customization and Progression
Progression builds through discovering and collecting creatures with distinct movement patterns, moods, and quirks that vary by species or individual traits. New biomes unlock over time, each bringing fresh species and environmental details. Custom morph creation lets players introduce original fish not found elsewhere. The cat serves as an ongoing companion element that responds to placement and interaction. All systems remain optional, supporting both hands-off idling and more involved sessions of rearranging the tank or experimenting with physics.
Is It Worth Playing?
Still Waters suits players seeking a low-pressure simulation that runs alongside other activities on PC. Its overlay design and passive ecosystem make it ideal for background companionship during work or downtime, while the interactive physics and collection features provide engaging moments when attention turns to the tank. The upcoming release in Q4 2026 means current details focus on the verified mechanics of idle progression, direct manipulation, biome variety, and stream tools. Those who enjoy casual indie simulations with optional social elements will find a match in the flexible tuning options and creature behaviors. No player reviews exist yet, so expectations rest on the described systems for relaxed, screen-resident aquarium management.