Single-player games like The Big Book of Monsters
Below are 8 single-player Steam games similar to The Big Book of Monsters, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like The Big Book of Monsters page.
Ranked picks
- 1
Naxos
Single-player alternative to The Big Book of Monsters — playable solo, no multiplayer required. Shares RPG with The Big Book of Monsters.
Naxos is like all of my other games! I just feel like there arent many Auto Battle RPGS out there.... I really want to keep moving the genre forward!
- 2
Pioneer Clicker
Single-player alternative to The Big Book of Monsters — playable solo, no multiplayer required. Shares Simulation with The Big Book of Monsters.
Clicker game played at the bottom of the screen. A village chief is lost on the road after his village is destroyed by demons. The lord of the village gives him an order to open up a new frontier and cultivate the land. The village chief's hell of endless cultivation begins.
- 3
High Fantasy Idle
Single-player alternative to The Big Book of Monsters — playable solo, no multiplayer required. Shares Indie and Adventure with The Big Book of Monsters.
High Fantasy Idle is an idle RPG with unique class-based gameplay and hundreds of achievements and secrets to find. Level up by farming, battling, and researching while buying items and perks, then rebirth to find newfound power! Embark on a journey of fantasy and mystery to unravel your destiny.
- 4
Bloobs Adventure Idle
Single-player alternative to The Big Book of Monsters — playable solo, no multiplayer required. Shares Indie and Adventure with The Big Book of Monsters.
A massive RuneScape-inspired idle RPG built for long-term progression. Train 24 skills, defeat bosses, collect over 500 souls, and bank offline time to accelerate your progress whenever you choose.
- 5
Mirage - Idle RPG
Single-player alternative to The Big Book of Monsters — playable solo, no multiplayer required. Shares Simulation and RPG with The Big Book of Monsters.
An idle incremental bullet heaven where you fight waves of enemies, collect loot, and grow stronger every run. Play four different classes, craft items, run a shop, tend a garden, raise pets and keep progressing even while you're away.
- 6
Gaiadon: Eternal Quest
Single-player alternative to The Big Book of Monsters — playable solo, no multiplayer required. Shares Indie and Adventure with The Big Book of Monsters.
An Epic Incremental/Idle RPG
- 7
Idle Reincarnator
Single-player alternative to The Big Book of Monsters — playable solo, no multiplayer required. Shares Indie and Simulation with The Big Book of Monsters.
An incremental RPG where you reincarnate through lifetimes, mastering professions, unlocking skills, and exploring mystical realms.
- 8
Weapon Shop Fantasy
Single-player alternative to The Big Book of Monsters — playable solo, no multiplayer required. Shares Indie and Adventure with The Big Book of Monsters.
A shop game with RPG? Or is it RPG with a shop? Collect materials, Craft weapons, Train your staff and defeat your enemy! This is Weapon Shop Fantasy!