Core loop
Connect Heart Isle to water and light, cultivate Dewbell and Sunleaf, choose a fruiting or sheltering weave, extend roots toward Fracture Garden, then repair, prune, reroute, and cleanse the network through the storm and recovery cycles.
Published HTML5 gameSandboxedLicensed derivativeOwner-reported playtest
Play Mycelium Sky Online
Grow a living fungal network across floating islands, route water and spores, choose a symbiosis, survive rootstorms, and sustain a Skycap bloom.
Runs with isolated scripts, no top navigation, and no artifact token in the URL.
Licensing disclosure: A source-owned OpenGame derivative based in part on e01.ai’s MIT-licensed Starfall
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Sandboxed game player
Click inside the game to focus controls.
Game information
- Released
- August 17, 2026
- Game engine
- HTML5
- Platforms
- Web browser — mobile and desktop
- Orientation
- Landscape
Game details
What to expect
Mobile and desktopLandscape layout
Goal
Keep the living network connected and stable through four Standard pressure cycles, restore Fracture Garden, grow its support organisms, and sustain a Skycap bloom.
Failure and restart
If Heart Isle loses all stability or stays dry too long, the ecology collapses; use Replay to verify that run or Retry same seed to restart immediately without reloading.
Tips for a better run
- Connect Raincup early so its water gradient can feed Heart Isle before expanding toward Sun Shelf.
- Fruiting produces spores quickly, while Sheltering cushions the directly bonded root; choose for the route you intend to defend.
- A badly damaged bridge can be pruned and replaced with a direct reroute instead of spending every resource on repair.
- During recovery, rebalance water and spores before each Sootmold cleanse, then add Puffwings before committing to Skycap.
Tags
strategy gamebrowser gameecologyresource managementreal-time strategytouch controlsfloating islands
Publication details were supplied by the authenticated artifact owner. Internal QA evidence remains private and is not independently verified by this page.
Controls
How to play
- 1Mouse or touch: select an island, then drag between floating islands to grow root bridges; use the on-screen growth dock for organisms, symbiosis, repair, pruni
- 2Keyboard: press 1–4 to select an island; D, S, A, P, or K to grow an organism; B or Shift+B to choose a symbiosis; E repairs, Backspace/Delete prunes, X cleanse
- 3Use Standard for the full ecology route or Quick / QA for a shorter fixture; after a win or loss, Replay verifies the action trace and Retry restarts the same s
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