Isles of Sea and Sky Walkthrough
To finish the main story: awaken all four elementals by taking six matching gems to each great spirit, then return to Ancient Island, cross the opened seal and climb the Sanctum. You can keep exploring to 100% afterwards.
The shape of the game
The world is one connected archipelago. Ancient Island is your home base; four elemental main islands ring it — Stoney Cliffs (earth), Tidal Reef (water), Raging Volcano (fire) and Frozen Spire (ice) — each patrolled by a great elemental spirit. The main story is a loop: raise enough stars, unlock the next island, wake that island's spirit, and repeat. When all four spirits are awake, the seal on Ancient Island opens and the Sanctum is your final climb.
Star gates — the order the world opens
| Stars | Unlocks | Notes |
|---|---|---|
| 5 | Tidal Reef (west of Stoney Cliffs) | First gate; easy to hit on the starting islands |
| 15 | Raging Volcano | Bring water for the walk, and patience for heat |
| 30 | Frozen Spire | The ice island; slippery everything |
| 45 | Far-western waters | Snake island and the dark rune's hiding place |
| 110 | Pyramidion quest | v2.6a threshold (previously 120) — post-game content |
The route, island by island
- Ancient Island (start). Learn the verbs — push, stack, steer — and leave with the turtle unlocked and your first screenful of stars. Everything you cannot reach yet, you will reach later; note it and move on.
- Stoney Cliffs (north). Your first elemental island. Earth gems live here, and the rock elementals need six of them (details below). The upgrades guide covers what you can pick up on the way.
- Tidal Reef (5 stars). Water world. Expect the dragonfly puzzle and a lot of tide logic.
- Raging Volcano (15 stars). Heat is a resource here; without protection your route is limited to safe stone. Fire gems feed the fire spirit.
- Frozen Spire (30 stars). Ice physics, warp pads, and the game's hardest meta puzzle (Frozen Spire A1).
- Back to Ancient Island. With four spirits awake, the seal between the rivers opens. Climb the Sanctum to finish the story (this is the Pathfinder achievement).
- Keep playing. The credits are not the end — the 100% completion and Mysterious Update guides cover the post-game layer, and none of it is missable.
The four spirits
Each elemental spirit is woken the same way: collect six gems of its element around and inside its island's puzzles, then deliver them to the spirit. Waking all four is the main quest.
| Spirit | Island | Gate | Achievement |
|---|---|---|---|
| Earth (rock elementals) | Stoney Cliffs | None | Rock and Roll |
| Water (tide elementals) | Tidal Reef | 5 stars | Slip and Slide |
| Fire (flame elementals) | Raging Volcano | 15 stars | Turn and Burn |
| Ice elementals | Frozen Spire | 30 stars | Huff and Puff |
Ending the game early (and why you shouldn't stress)
Reaching the Sanctum finishes the main story, but the game lets you keep every star, gem and secret you found — and everything you did not find is still waiting. Most players finish the story around 60–70 stars and keep going after the credits.
- Want the full route with no backtracking? Use the 100% guide.
- Stuck on a specific room? The puzzle solutions page covers the famous blockers.
