PCGame

Islet Online

Sandbox MMORPG about building, crafting, and shaping an ecosystem

Morenori Soft · Released Feb 11, 2019

AdventureIndieMassively MultiplayerRPG

Reviews
Mostly Positive
77% of 615
Recent reviews
Not enough recent
Players
14
daily peak, Nov 7, 2026
Steam Deck
Playable
Last update on Steam
1 day ago
Nov 6, 2026
Minimum PC
Shader Model 3.0
2 GB RAM · 1 GB disk
Full requirements

What is Islet Online?

This open-world sandbox MMORPG centers on digging and placing bricks to build, gathering materials to craft items, and gaining skills through your actions. Animals and plants interact, and what you do can change their ecosystem. You can play alone or with others.

For you if...

  • +you enjoy shaping an ecosystem through your actions
  • +you want open-ended play alone or with others

Not for you if...

  • −you want quests to guide each step of progression

What players say

77% of 615 reviews are positive

Players praise the crafting but complain that other players rarely interact.

Players over time

▲ +34% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 31 players on Sep 23, 2026.

Show the data
DayPlayers
Nov 7, 202614
Nov 6, 20267
Nov 5, 20267
Nov 4, 20268
Nov 3, 202614
Nov 2, 202615
Nov 1, 202613
Oct 31, 202615
Oct 30, 20267
Oct 29, 202610
Oct 28, 20267
Oct 27, 20265
Oct 26, 202611
Oct 25, 202611
Oct 24, 202611
Oct 23, 20269
Oct 22, 20269
Oct 21, 20269
Oct 20, 20269
Oct 19, 20267
Oct 18, 20269
Oct 17, 20268
Oct 16, 20267
Oct 15, 20267
Oct 14, 20266
Oct 13, 20268
Oct 12, 20267
Oct 11, 20266
Oct 10, 20266
Oct 9, 20266
Oct 8, 20269
Oct 7, 202611
Oct 6, 202610
Oct 5, 20269
Oct 4, 20267
Oct 3, 20266
Oct 2, 20269
Oct 1, 202615
Sep 30, 202612
Sep 29, 202616
Sep 28, 202613
Sep 27, 202610
Sep 26, 20269
Sep 25, 20267
Sep 24, 202614
Sep 23, 202631
Sep 23, 202611
Sep 22, 202614

Screenshots and trailer

Islet Online screenshot 1

Islet Online system requirements

Minimum: Shader Model 3.0, 2 GB RAM, 1 GB of disk space.

As published by the developer.

Can my PC run Islet Online?

Tell us your graphics card once and every game page will answer this for you.

Set up my PC →

Minimum

OS
Windows XP or later
Processor
Core 2 Duo
Graphics
Shader Model 3.0
Memory
2 GB RAM
Storage
1 GB available space
DirectX
Version 9.0c

Recommended

OS
Windows 7
Processor
Core i5
Graphics
Shader Model 3.0
Memory
4 GB RAM
Storage
10 GB available space
DirectX
Version 9.0c

Does Islet Online have co-op or multiplayer?

Yes: co-op online; MMO. It also has a single-player mode. Crossplay with other platforms is declared.

Does Islet Online run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Default controller config not fully functional
  • Sometimes shows mouse, keyboard or non-Deck controller icons
  • Some text entry requires manually opening the on-screen keyboard
  • Some in-game text is small and may be hard to read
  • The native resolution is not the default one
  • Default graphics settings perform well on Steam Deck
  • Singleplayer gameplay requires active internet connection

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
10
Steam features
Cloud saves, Family Sharing, Trading cards, In-app purchases
Languages
Text only: English, Simplified Chinese, Russian, Korean, Vietnamese, Traditional Chinese, Filipino, French, Spanish - Spain, Indonesian, Thai, Portuguese - Brazil, Portuguese - Portugal, Spanish - Latin America, Japanese.

Does Islet Online use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam

Tags

Recent updates

1 DLC available.

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