Quick answer
Count six principal campaign areas in the supplied walkthrough: Lighthouse, Forest (Island 2), Desert (Island 3), Rocks (Island 4), Volcano (Island 5), plus the route’s later completion area. Exact map boundaries are not officially defined in the archive.
Verified route map
| Order | Area | Progression signal |
|---|---|---|
| Start | Lighthouse | Spider Crab quest awards boat keys. |
| Island 2 | Forest | Leeches and Giant Piranha progression. |
| Island 3 | Desert | Blue Shark, grill and local quest chain. |
| Island 4 | Rocks | Later creatures, equipment and objectives. |
| Island 5 | Volcano | Late-game island stage. |
| Final stretch | Completion route | Boss route can be rushed for a one-hour achievement. |
Money does not unlock islands
New islands are tied to local quests and boss objectives. Farming cash makes fights easier, but it does not replace the active objective. Talk to local NPCs first, defeat the required creature, and return its distinct trophy rather than generic meat.
Why the count needs a note
The official Steam description says quests and bosses progress to new islands but does not publish a numbered total. The six-area answer above is inferred from the supplied completion walkthrough’s route and should not be read as an official map taxonomy.
Logbook note: This is a source-based route count, not a developer-confirmed island total.
The Islet Update 1.1.0: mini islands and new island spacing
The Islet Update 1.1.0 (September 28, 2026) adds multiple mini islands and adjusts the distance between each island. Both are official change-list lines and nothing more: the post publishes no map, no count of mini islands, no position and no numbers for the new spacing.
Practically, the spacing change resets travel timings learned on 1.0.12. Time one ordinary Lighthouse-to-Forest run after updating before deciding whether a boat engine is still the best use of your money, and keep reading the six-area route above as campaign structure rather than a fixed travel estimate.
Logbook note: As of The Islet Update 1.1.0 (September 28, 2026) the mini-island count, contents and map positions are unpublished; “multiple” is the official wording.
Source ledger
Sources
- How to Fish on Steam — Official identity, features, system requirements and game loop.
- Destructoid complete walkthrough — Island order, boss steps and equipment observations.
- How to Fish island progression guide — Quest and trophy rules for moving between islands.
- How to Fish The Islet Update 1.1.0 notes — Official “THE ISLET UPDATE 1.1.0” announcement, published September 28, 2026 — the game’s first content update. It adds a bundle with PEAK!, a new weapon, multiple mini islands, more creatures, a new mini-boss, more items, a new bait, a new NPC, new achievements and a new outfit, and adjusts the volume of some sound effects and the distance between each island. The post publishes no names, numbers or prices for the new content.