Indie game studio

Small games,
quietly beautiful

We make calm experiences that sit gently in your day — no grind, no stress, just something lovely to come back to.

See our games Get support

Now playing

Our games

Thoughtfully crafted experiences for people who want their screen to feel a little warmer.

Coming to Steam

A Cozy Desktop Aquarium

A tiny, transparent aquarium that sits quietly in the corner of your screen while you work, browse, or game. Your fish wander, the water glows, and your desktop shows through the glass. Clicks outside the tank pass right through — company, never in the way.

  • Cozy
  • Idle
  • Desktop overlay
  • 161 species
  • No fail state
Steam page coming soon

Wishlisting opens the moment the Steam page goes live — check back soon.

161 Fish & critter species
Always-on Corner overlay
Zero Stress or fail state
Win · Mac · Linux Platforms

Lives on your desktop

A small, borderless, always-on-top window that parks in the corner of your screen. Transparent glass lets your wallpaper show through. The interface fades when you're not using it — just water and fish.

Feed, earn, collect

Click to drop food and watch fish swim over to eat. Earn shells slowly over time — a gentle idle currency, not a grind. Spend them in the Store to bring home new species from a roster of 161 — 134 pixel-art fish plus seafloor critters like snails, crabs, and starfish.

Slow discovery

New species surface as you play — a relaxed, weeks-long collection that rewards coming back each day, not marathon sessions. Impatient? Any fish can be brought home early for double its price.

Make it yours

Decorate with seaweed, kelp, coral, sea fans, rocks, and iridescent shells. Name every fish. A day/night cycle drifts the water from bright noon to deep blue night. The tank grows livelier as your community grows.

Designed to be peaceful

Fish never starve — idle for hours or days and your tank is always fine. Soft aquarium ambience, a daily shell gift with streak bonuses, and poke-to-scatter when you want a little interaction.

Steam features

Steam Achievements for milestones like your first fish, a full school, and discovering every species. Family Sharing supported. A calm companion built for the corner of your screen.

Reefling is made to be the calmest thing on your screen. Drop in, feed a fish, and get back to your day.

In the lab

What's next

Reefling won't be alone for long. Something warmer-blooded is taking shape — the studio's transparent glass is moving onto dry land.

In development · 2026

Codename ████████

A cozy desktop terrarium

You've met the fish. Next, the same quiet glass parks on dry land — a tiny, sun-warmed terrarium in the corner of your screen. Little reptiles wander the sand, bask under the heat lamp, and duck into their hide while you work. Same calm as Reefling, a whole new biome.

  • 🦎 Collectible reptiles
  • ☀️ Bask & hide behavior
  • 🪨 Build the habitat
  • 🌵 New desert biome

No store page yet — it's still warming up. Wishlists open right alongside Reefling. Watch this corner.

The studio

About us

Hollow Nebula Interactive is a one-person studio building games that respect your time.

Calm by design

No hunger timers, no punishment. Our games are company, not chores.

Crafted with care

Every shader, sprite, and sound is chosen to feel warm and alive.

Made to linger

Slow discovery, gentle progression — the kind of game you keep open all day.

More on the way

Reefling is the first little world, not the last. A second one is already basking in the lab.