Overlapi vs ISOLAND
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Overlapi
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How much of the overlap can you keep? Overlapi is a deceptively simple game of timing and precision. Watch the moving square and tap at just the right moment. Only the overlapping area survives—and becomes the target for whatever comes next. Every imperfect tap leaves you with less room for error. Keep at least 50% to complete a level. Reach 75% for two stars, 90% for all three, or preserve everything for a perfect 100%. Take on 100 levels across 10 increasingly demanding zones. Squares become faster, arrive in greater numbers and introduce diagonal movement as you progress. Return to a level and your previous best remains visible as a target. Beat it by the smallest margin, chase three stars or keep pushing until the level is marked perfect. Earn stars to unlock every zone through play. Optional one-time in-app purchases let you unlock later zones sooner. FEATURES • Simple one-touch gameplay • 100 levels across 10 zones • Horizontal, vertical and diagonal movement • Up to 300 stars to collect • A visible previous-best target • Perfect-level and perfect-zone challenges • Game Center leaderboards and achievements • Optional one-time zone unlocks • No advertising or account required • Free to download and play Can you collect all 300 stars? Can you perfect an entire zone? The ultimate challenge is a flawless 10,000-point score: 100% on every level. Time your tap. Keep the overlap.
ISOLAND
Explore a mysterious seaside town shrouded in confusion and a forgotten past. Uncover the secrets of a peculiar amusement park that seems to hold the key to lost memories. Immerse yourself in a gloomy atmosphere despite the wonderful weather.
- Explore a mysterious town
- Uncover forgotten memories
- Solve puzzles
- Investigate an amusement park
- Atmospheric gameplay
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"I've never seen anyone come out of the theatre after the show." Such confusion haunts every corner of this little seaside town. You can't remember the past. Your only memory is of an amusement park recently built by the sea. But when you think about it, maybe it was not recently built. Who cares anyway? The weather is wonderful, but the town is so gloomy.
Screenshots
Verdict
The clearest difference is update cadence: ISOLAND at monthly against Overlapi's every 12 months. ISOLAND also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Overlapi sells 9 one-off in-app purchases and ISOLAND sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Overlapi ships an update every 12 months, ISOLAND monthly. Both last shipped on October 29, 2026.
| Parameter | Overlapi | ISOLAND |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (78 ratings) — better |
| Positive reviews | — | 73.6% of reviews |
| Number of ratings | — | 78 — better |
| Update frequency | Every 12 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 809 MB |
| Age rating | 4+ | 4+ |
| Developer | NUIFISH LIMITED | COTTONGAME Network Technology Co., Ltd. |
Bugs and requests
Overlapi
Not enough reviews yet to summarise bugs or requests.
ISOLAND
Reported bugs
15 issues- Pocket knife disappears from inventory
- Game cannot be started
- Saved game disappears
- Cannot get ticket out of poster
- English app changed to Chinese/Japanese
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- Password puzzle not solvable but game completes
- Inventory distribution puzzles are random
- Feed the wrong birds and game gets stuck
- Cannot buy bird seeds after feeding wrong birds
- Notes disappearing after quitting game
- In-app purchases not loading/working
- Translation issues (Japanese/Chinese)
- Archive loss after quitting game
- Second playthrough resets to first playthrough
- Bug with bird feed not disappearing after feeding wrong birds
Requested features
4 requests- Option to take in-game photos for clues
- More achievements
- More surrealist art elements
- Fix for disappearing notes/archives
In-app purchases
Overlapi
- Unlock Zone 2$0.99
- Unlock Zone 3$0.99
- Unlock Zone 4$0.99
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- Unlock Zone 5$0.99
- Unlock Zone 7$0.99
- Unlock Zone 6$0.99
- Unlock Zone 8$0.99
- Unlock Zone 10$0.99
- Unlock Zone 9$0.99
ISOLAND
- A stack of gold coins$0.99
- A gold coin$0.99
- A bundle of gold coins$1.99
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- Purchase the current game$1.99
- A large number of gold coins$3.99









