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Book of Fei

Book of Fei

Lead adorable warriors to form an adventure team to work and adventure on the computer desktop. Defeat the warriors to save the world. Rich nurturing and collection elements, idle and slack off to earn money and fight monsters!

Released Feb 20, 2026 Developer TAO Studio Platforms Windows · Mac IdlerDesktop CompanionAction RPGRPGHack and Slash
View on Steam ↗ $2.99 (US · as of 2026-09-26)

What players say

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

93.8%positive372 reviews
Recommended · 4 found this helpful

“Very good idle game with lots of depth and content. Highly recommended and way better than Task Bar Hero.”

— a player, Steam review · 384 hrs played
Recommended · 2 found this helpful

“8/10: the gameplay loop is enjoyable. The UI though.. feels dated. When I first launched it, I thought it was some old game. I even checked the store page to see when it came out… and nope, it’s a 2026 release. The game itself has so much potential to be super addictive, but the…”

— a player, Steam review · 27 hrs played
Recommended · 1 found this helpful

“How is this only $3? This has to be one of the best deals on steam. Ridiculously fun game you can just leave running on the bottom of your screen. You can also easily switch monitors, and hide it. Not overly complicated. Just a simple idle game with clear progression. Has more…”

— a player, Steam review · 186 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.

345all-time peak
0 250 500 213 avg · Apr 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.

27achievements
70.8%median completion
58.3%rarest: Perfect Master
83.0% of players 82.3% of players 82.3% of players 82.1% of players 81.5% of players 81.1% of players 80.7% of players 78.5% of players 77.7% of players 74.9% of players 74.5% of players 73.2% of players 71.0% of players 70.8% of players 69.1% of players 69.0% of players 66.1% of players 66.0% of players 65.3% of players 65.3% of players 65.1% of players 64.7% of players 64.7% of players 64.4% of players 63.3% of players 60.8% of players 58.3% of players 83.0% 0% most earned rarest
Almost everyone has
83.0%Pathfinder — Clear a plot for the first time
82.3%New World — Unlock a plot for the first time
82.3%Inseparable — Interact with the Hero 10 times
Rarest badges of honor
58.3%Perfect Master — Complete All Other Achievements
60.8%Rainbow Storm — A character equips 3 colored pieces of gear simultaneously.
63.3%Demon King's Bane — Defeat Final Stage

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-26. Steam prices vary by region — always confirm your local price on Steam.

$2.99current · sampled 2026-09-26 21:12 UTC
$2.99lowest since tracking began2026-09-26
US2.99 USD
EU3.15 EUR
UK2.65 GBP
Australia4.25 AUD
Canada3.59 CAD
Japan395 JPY
Brazil11.99 BRL
China12.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$1.8 Brazil Japan Canada Australia US UK EU≈$3.6

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

Latest official news

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

Jul 28, 2026
A Note from Arya | Mac Fix Squad to the Rescue! (v3.05.003)

Hi, Brave Hero! Arya here. I heard the call from our Mac heroes — so I brought the fix squad to give your Mac a well-earned breather! Attempted Fix: Mac Memory Overflow : Attempted to fix a memory ove

Jul 22, 2026
A Note from Arya | Mythic Gear, Your Way (v3.05.001)

New Feature: Mythic Gear Attribute Reroll : Reroll the value of a chosen random attribute on your Mythic Gear, bringing every piece closer to your ideal. New Feature: Mythic Gear Essence : Keep disman

Jul 15, 2026
A Note from Arya | Gold & Battlefield, All Set (v3.03.008)

Fix: Battle Gold Pop-Ups : Fixed an issue where battle gold pop-ups behaved abnormally in certain situations. Fix: Ultra-Wide Screen Battlefield : Fixed an issue where the battlefield was too large on

Jul 13, 2026
A Note from Arya | Achievements Sync Smoothly (v3.03.007)

Fix: Steam Achievement Sync : Fixed an issue where Steam achievements failed to sync in certain situations—now your hard-earned achievements unlock and sync reliably. May every bit of your effort be r

Jul 08, 2026
A Note from Arya | Steadier Temple, Finer Touches (v3.03.005)

Fix: Temple Crash : Fixed an issue where the Temple could freeze or crash in certain situations—explore with peace of mind. Improvement: Large Number Display : In the Chinese-language clients, huge nu

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

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

GenresCasual, Indie, RPG
Player tagsIdler · Desktop Companion · Action RPG · RPG · Hack and Slash · Indie · Singleplayer · Casual · Combat · Cute · Relaxing · Incremental (Steam store community voting)
FeaturesSingle-player · Steam Achievements · Adjustable Text Size · Custom Volume Controls · Mouse Only Option · #category_playable_at_your_own_pace · Playable without Timed Input · Save Anytime
LanguagesEnglish, Simplified Chinese, Traditional Chinese, Japanese, Korean
Achievements27
Minimum system requirements (PC)

Minimum: OS: Windows10 Processor: Intel i3 Dual Core Memory: 4 GB RAM Graphics: Intel HD 3000 Storage: 648 MB available space