Full game metadata
| Field | Value |
|---|---|
| Steam app type | game |
| Steam App ID | 4459400 |
| Live current players | 0 |
| SteamPulse tracked peak | 1 |
| Live count (today's peak floor) | 0 |
| Price | $4.99 |
| Free to play | No |
| Discount | 0% |
| Original price USD | $4.99 |
| Current price USD | $4.99 |
| Release date | Mar 24, 2026 |
| Developer | Double Star Games, LLC |
| Publisher | Double Star Games, LLC |
| Owners estimated | Not available |
| SteamSpy owner estimate minimum | Not available |
| SteamSpy owner estimate maximum | Not available |
| Review type | No user reviews |
| Positive review percent | Not available |
| Positive reviews | 0 |
| Negative reviews | 0 |
| Total reviews | 0 |
| Steam recommendations | Not available |
| Achievements | 21 |
| Average playtime forever | Not available |
| Windows support | Yes |
| macOS support | No |
| Linux support | Yes |
| Parent game | Not available |
| Store URL | https://store.steampowered.com/app/4459400/ |
Short description
Feryl is an experimental digital life simulation. A small creature lives in a glass terrarium on your desktop. It explores, plays with objects, responds to your voice, and sometimes challenges you to tic-tac-toe.
About this game
About This Game Feryl is a tiny digital creature that lives in a terrarium on your desktop. It isn’t animated or scripted — its behavior emerges from a continuous simulation driven by an internal rhythm. You can watch it explore, speak to it through your microphone, or try to play games with it. Overview Feryl is a very small digital creature that lives in a glass terrarium on your desktop. It is not animated or scripted. Feryl is an experimental digital life simulation. Feryl runs on a stochastic internal rhythm — a forever-repeating breath cycle that is always unique and drives everything it does: where it looks, when it moves, what it pays attention to, how it reacts, and how it learns about the world around it. You can watch Feryl explore its enclosure, try to engage it with games, or speak to it through your microphone and see how it responds. Features A Living Digital Creature Feryl is less a traditional game and more a small system you share space with. Feryl’s behavior emerges from an internal rhythm rather than scripted animations. Its movement, attention, and curiosity arise from a continuous simulation running beneath the surface. The autonomous system that drives Feryl — perception, attention, speech, breathing, and behavior — fits in roughly 70 kilobytes . A Terrarium World Inside the enclosure are small objects, a friendly fly, busy beetles, and simple ways for you to interact. You can observe Feryl interacting with its space and learn its relationship with everything inside: its vine, its couch, its rock, its mirror, and the sound of you speaking through the intercom. Play Tic-Tac-Toe with Feryl A tic-tac-toe board inside the terrarium allows you to try to play a game with Feryl. Click the board to start a match. If Feryl becomes interested, it may approach the board and make its move. If you can keep its attention, you may even complete a full game. Over time, Feryl gradually improves through reinforcement learning after each match. Voice Interaction Feryl can hear you through your microphone and may respond with sounds of its own. Over time it adapts slightly to the vowel shapes and rhythms of the voices it hears. Unique Creatu…
Supported languages
English