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Book of Fei

Book of Fei

by TAO Studio

★ 94%
Price $2.99
Avg Players 196
Reviews 357
Released Feb 20, 2026
2DCasualClickerCombat
Offline progress
View on Steam ↗

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Book of Fei places a team of collectible heroes on your desktop to automatically fight monsters and earn currency while you work. The game layers progression systems including character upgrades, prestige mechanics, and unlockable content that consistently extends the endgame, creating a low-attention experience that rewards both active play and extended idle periods. It appeals to players who enjoy gradual collection gameplay with frequent milestone rewards and minimal time investment required.

About this game

What players are saying

▲ Recommended 4 hrs
The initial welcome to the game is charming, as it begins with a book opening across your desktop. It quickly becomes clear that this is no ordinary book. Inside lies a living world that has unfortunately been overrun by monsters. You are guided by the book’s guardian, Fei, who tasks you with reclaiming this world with the help of heroes. Your journey begins with Arya, the very first hero, who starts out as a complete novice.

The game is divided into two main parts. In the first part, Arya generates money in an idle fashion. However, this process only lasts for a little over two minutes before you need to manually press the claim button. If you fail to do so, the income stops accumulating. At the same time, there is also a more active way to earn money. By clicking and shaking a hero, you can generate significantly more gold that is instantly added to your stash.

The second, and main component of the game revolves around battles. The world within the book is divided into a grid of smaller and larger squares. Your objective is to travel across these spaces, defeat several waves of enemies, and ultimately face a boss at the end of each encounter. Combat itself is automatic. If your heroes win, they advance to the next wave. If they lose, the battle resets back to the first wave.

Unlocking new areas on the map requires spending money. Each spot only needs to be unlocked once, but the cost steadily increases the further you move away from the starting point in the center toward the outer edges of the map. The ultimate destination lies on the far right side, serving as the final goal of your adventure.

Defeat is not necessarily a setback because it is also part of the progression. Heroes gain experience from every enemy they defeat, gradually increasing their health, attack power, and speed. Each hero also has two special abilities that activate automatically during combat.

Since no hero can fight effectively without equipment, you will spend your hard earned money on chests that contain random gear. These chests can provide weapons, armor, or accessories. Heroes belong to different archetypes such as warriors or archers, and each archetype has its own type of chest.

Every hero has four tiers of equipment for each gear category. While the first tier is available from the start, the remaining tiers unlock as you progress through the world. Fortunately, the game avoids drowning the player in endless piles of useless items. If you obtain equipment with a higher rarity tier, it is immediately equipped. The highest rarity is the rainbow tier. If you receive a lower quality item, it automatically converts into experience books that can be used to boost a hero’s level. Once you manage to acquire the best possible equipment, chests will reward only experience books instead of redundant gear.

As you reclaim areas of the map, new heroes become available for purchase. Up to three heroes can form a party and participate in battles. However, each hero has a level cap. When a hero reaches the maximum level and fulfills certain requirements, you can promote them to a stronger class. This promotion increases all their stats and grants two additional abilities, although the hero returns to level one. Beyond this, there are even third and fourth class promotions, though reaching them may take some time.

Another piece of customization comes in the form of monster cards. These rare items occasionally drop from defeated enemies. Each card grants a unique perk, such as generating a protective shield every ten seconds, restoring a small percentage of health over time, increasing attack power, and many other perks. A hero can equip only one card at a time, and cards must be collected manually by clicking on them when they appear after a battle. Just like with gear, cards come in rarity tiers, and they are replaced automatically when a better found is found.

The core gameplay loop is simple but effective. You earn money to unlock new map locations, purchase chests to obtain better equipment, and defeat all enemies in an area until it reaches one hundred percent completion. Once a location is fully conquered, you can move to adjacent areas, gradually expanding your reach across the map.

Not every location leads to combat. Some spots unlock new working areas that increase the idle income limit, allowing the game to run unattended for longer periods. Others trigger special events that unlock badges in the shop. These badges provide helpful bonuses, such as a small lifesteal chance or additional experience for heroes who are not currently participating in battles.

Overall, the game strikes a pleasant balance between idle mechanics and active interaction. Progressing through the world and completing all achievements may take several hours, yet the experience rarely feels like a chore or something that constantly demands your attention every few minutes. Instead, it offers a relaxed and rewarding pace that fits perfectly within the idle genre.
2 found helpful Steam ↗
▲ Recommended 109 hrs
Fantastic little Idle game!! Scratches every itch, and just keeps giving! Four different times I've thought "Ok, here the plateau is, that was fun", and then BAM! There's a new build tree or weapon system or map mode(using broad terms as not to spoil anything). I plan on this being a part of my screen for a long while. Well done dev/devs!! Thank you
1 found helpful Steam ↗
▲ Recommended 68 hrs
Quite a fun little idle game, devs are super active too.
0 found helpful Steam ↗

Reviews are by Steam users, hosted on Steam.

Latest updates

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

8 days ago
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 overflow issue that could occur after extended play on Mac, so your adventure won't be interrupted by stutters.Attempted Fix: Mac Frame Rate Issue: Attempted to fix abnormal frame rate fluctuations on some Mac devices — everything should feel smoother now!Mac heroes, let me know if things feel better! If we're not quite there yet, I'll keep at it~Contact: yunthelia@zohomail.cn / QQ: 37530735 / QQ Group: 1047804252 / Discord: https://discord.gg/hSdJ7gDjDQ

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

14 days ago
Hi, Brave Hero! Arya here. This update brings a whole new set of tools for your Mythic Gear~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 dismantling perfect Rainbow Quality Mythic Gear to earn Mythic Gear Essences.New Feature: Advanced Crafting Catalysts: Slot different Mythic Gear Essences as catalysts during advanced crafting to influence the results.May you forge the Mythic Gear of your dreams soon—see you next time!Contact: yunthelia@zohomail.cn / QQ: 37530735 / QQ Group: 1047804252 / Discord:https://discord.gg/hSdJ7gDjDQ

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

21 days ago
Hi, Brave Hero! Arya here. Two small battle fixes this time to make your fights feel smoother~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 ultra-wide screens (like 21:9 monitors).May every one of your battles feel crisp and satisfying—see you next time!Contact: yunthelia@zohomail.cn / QQ: 37530735 / QQ Group: 1047804252 / Discord:https://discord.gg/hSdJ7gDjDQ

Posts come from Steam's official announcements feed.

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