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Idle Sphere

Idle Sphere

Stunning sphere-themed idle/incremental game. Experience simplicity's beauty.

Released Nov 17, 2024 Developer Idle System, Inc., Yayu Publisher Idle System, Inc. Platforms Windows · Mac Early AccessSimulationIdlerAuto BattlerTime Management
View on Steam ↗ Free (US · as of 2026-09-25)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.

49.1%positive332 reviews
Recommended · 1 found this helpful

“Nice visuals. Could use a bit more info on what each thing is and does but also kind of fun just doing trial and error.”

— a player, Steam review · 514 hrs played
Recommended · 0 found this helpful

“Idle Sphere is a simple idle game built around the idea of watching a sphere grow while I gradually unlock upgrades and improvements. The basic concept is intentionally minimal, so I am mostly focused on generating resources, purchasing upgrades and watching the numbers increase…”

— a player, Steam review · 4 hrs played
Not recommended · 1 found this helpful

“honestly the only good thing about this game is the graphics and there's only so much there.”

— a player, Steam review · 11 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.

1,336all-time peak
0 500 1k 2025 2026 799 avg · Nov 2024

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.

29achievements
10.3%median completion
1.5%rarest: Prestige Overlord
40.5% of players 39.2% of players 34.1% of players 33.0% of players 28.5% of players 23.3% of players 22.7% of players 22.5% of players 19.4% of players 16.7% of players 14.6% of players 13.0% of players 12.8% of players 11.0% of players 10.3% of players 10.1% of players 9.4% of players 8.0% of players 7.6% of players 7.1% of players 6.6% of players 5.8% of players 5.5% of players 5.0% of players 3.2% of players 3.0% of players 2.4% of players 2.2% of players 1.5% of players 40.5% 0% most earned rarest
Almost everyone has
40.5%Sphere Initiate — Reach 1K spheres
39.2%Ascendant Initiate — Perform Sphere prestige for the first time
34.1%Sphere Collector — Reach 1M spheres
Rarest badges of honor
1.5%Prestige Overlord — Perform 10,000 Agency prestiges
2.2%God of Sphere Battles — Reach Battle Level 150
2.4%Lord of the Infinite Sphere — Reach Battle Level 140

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Aug 24, 2026
v2.0.5

- Added the first playable Topology progression cycle, connecting Topology, Celestial, and high-level Battle progression. - Added Idle Mileage rewards that strengthen Sphere generation and Battle Atta

Feb 02, 2025
[v2.0.4]

- Fixed an issue where IAPs, such as DLCs, were not functioning correctly.

Feb 01, 2025
[v2.0.3]

- Fix the issue where the restore button in the option menu disappeared.

Jan 31, 2025
[v2.0.2]

- Fixed an issue where the Topology Generator Speed was not being applied correctly. - Fixed a bug that prevented Challenge Tier 3 from unlocking properly. - Fixed an issue where the Topology Generato

Jan 28, 2025
[v2.0.1]

- Resolved an issue where the Sphere Image Cap upgrade was not applied correctly. - Corrected an issue where some Sphere stats breakdowns displayed development titles. - Added missing explanations for

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-25.

GenresCasual, Indie, Simulation, Strategy, Free To Play, Early Access
Player tagsEarly Access · Simulation · Idler · Auto Battler · Time Management · Incremental · Space Sim · 2D · Minimalist · Abstract · Fantasy · Relaxing (Steam store community voting)
FeaturesSingle-player · Steam Achievements · In-App Purchases · Steam Cloud · Family Sharing
LanguagesEnglish, French, German, Spanish - Spain, Indonesian, Portuguese - Portugal, Simplified Chinese, Japanese, Korean
Achievements29
Minimum system requirements (PC)

Minimum: OS *: Windows 7 SP1 or later Processor: Intel Core i3 or equivalent Memory: 4 GB RAM Graphics: Intel HD Graphics 4000 or equivalent DirectX: Version 10 Storage: 500 MB available space Sound Card: Standard sound device VR Support: Not supported