Start with the island economy
Oasis Island, also called My Island, unlocks at Town Center 19. The Dock takes you to an island with its own currency, Water Essence. Workers clear cacti while your Fountain produces Essence. Spend it on upgrades and useful decorations, place those decorations to raise Prosperity, and use the new Prosperity threshold to unlock the next Fountain level. The advice here follows that development loop; it is a practical interpretation of the client rules, not a promise of one optimal layout for every account.
Your first island sessions
- Follow the introductory island tasks and collect the Water Essence they award.
- Place Reservoirs and keep a walkable route between them and the surrounding cacti. Two Reservoirs can be effective at once.
- Get a Reservoir to level 4 when your Fountain and Water Essence allow it: its worker count increases from one to two.
- When a treasure chest becomes visible, clear the cacti around it and inspect its reward. Avoid blocking the approach with decorations.
- Collect your Fountain before its 12-hour storage fills. Two collections a day can prevent idle time, provided neither interval exceeds the cap.
What to work on next
| Your situation | Next step | Why |
|---|---|---|
| Fountain upgrade is blocked by Prosperity | Compare eligible decoration upgrades and placement | Stored or excess copies do not contribute |
| Prosperity is ready but Essence is short | Collect Fountain, workers, tasks and ally help | The threshold itself is not consumed |
| Clearing is slow | Check Reservoir level and worker access | More workers need usable routes |
| Cacti are all cleared | Place the Purifier and retain Reservoir workers | The workers can continue collecting Essence |
| Fountain is level 10 | Compare components, Wonder blueprints and useful decoration levels | The shop opens long-term progression purchases |
Spend Prosperity carefully by understanding it
Prosperity is a condition for Fountain upgrades, not a second wallet. It comes from eligible placed decorations. Every decoration has a Type Limit, and that limit applies to both its stat bonus and its Prosperity. A spare copy can still be useful as an upgrade material, but placing ten copies of a Type-Limit-one decoration does not multiply either benefit. Moving an active decoration into storage can reduce the Prosperity you have available.
Buying and upgrading decorations
- Pick a bonus that supports what your account actually does. Construction and research help regular progression; combat bonuses matter most when that combat role is important to you.
- Compare the next level's bonus with its extra-copy requirement. The biggest max-level number may have an expensive final upgrade.
- Upgrades consume unplaced level-one copies of the same decoration. The reference pages show both the extra copies for each level and the total copies required.
- Only the current level of an active ordinary decoration counts. Do not add together all ten rows of its bonus table.
- Dismantling returns the level-one copies used. Selling back to the shop is a different operation with its own listed refund.
- General components work only where the decoration supports them. Check that decoration's own upgrade panel.
Compare early shop purchases
| Decoration | Fountain level | Water Essence per copy | Level-one bonus |
|---|---|---|---|
| Construction Hut | 6 | 5000 | Construction Speed 1.2% |
| Halo of Valor | 4 | 3000 | Construction Speed 0.8% |
| Oasis Spring | 5 | 3000 | Research Speed 0.8% |
| Picnic Mat | 5 | 3000 | Training Speed 1% |
A sustainable daily routine
- Collect the Fountain and Reservoir output, then check whether a new clearing path or chest is accessible.
- Help alliance members' Fountains and claim assistance on your own. Assistance has daily limits and a six-hour interval for receiving help.
- Finish useful island tasks before buying decoration copies solely to complete a task.
- Review weekly shop stock against your next Fountain or decoration target, rather than spending every last Essence immediately.
- Treat limited decorations as event-dependent. A model in the gallery does not prove the decoration can currently be obtained.
The island events are separate
Oasis Prelude is the island login event. Oasis & Beyond is the newcomer reward track with free and optional paid rewards. Neither is the same as the permanent island development system. Use their own reward references and closing dates; do not buy a paid track simply because you want to keep improving the island.