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ISOLAND4: The Anchor of Memory
ISOLAND4 is the fifth installment in the ISOLAND series by CottonGame. The game continues to feature the distinctive hand-drawn style of CottonGame, with point-and-click gameplay. The game also features a second playthrough mode, which allows players to gain a deeper understanding of the game.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.
“I think I enjoyed this one a bit more than the previous efforts. These guys continue to improve! Another solid 5-6 hours of fun puzzling. Easy recommendation, especially considering the ridiculously low asking price!”
— a player, Steam review · 7 hrs playedPlayer activity
Monthly average concurrent players. History through 2025-06 via SteamCharts; self-collected from the Steam API since Aug 2026.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
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Small Update - Fixed a series of bugs 1.15
Thank you all for your support for The Lost Island 4: Cabin Experiment! Thanks to the feedback from players, we discovered several hidden bugs in the game during the first week and promptly made adjus
《迷失岛系列》新作《迷失岛4小屋实验》现已正式发售
The fifth game of the"ISOLAND Series," titled "ISOLAND 4: The Anchor of Memory," is now officially released. Enjoy a special 10% discount during the first week, with a sale price of 16.2 RMB. Puzzle g
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-09-26.
| Genres | Adventure, Casual, Indie, Strategy |
| Player tags | Casual · Adventure · Puzzle · Exploration · Clicker · 2D · Indie · Hand-drawn · Stylized · Drama · Detective · Sci-fi (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Captions available · Steam Cloud · Remote Play on Phone · Remote Play on Tablet · Family Sharing |
| Languages | English, French, Spanish - Spain, Russian, Japanese, Simplified Chinese, Traditional Chinese, Arabic, Indonesian, Korean, German |
| Achievements | 21 |
| Official site | http://www.cottongame.com |
Minimum system requirements (PC)
Minimum: OS: Windows 10 (64bit) Processor: Intel Core 2 Duo E5200 Memory: 4 GB RAM Graphics: GeForce 9800GTX+ (1GB) DirectX: Version 10 Storage: 1 GB available space Additional Notes: 1080p, 16:9 recommended