# Idle Monster Frontier — Collect, combine, conquer!

> Idle RPG where you collect, merge, and battle monsters to save the world. (iPhone/iPad app by Iron Horse Games LLC.)

- Source: https://appshunter.io/ios/app/idle-monster-frontier/id1523328443 (this page in markdown: same URL + `.md`)
- Developer: [Iron Horse Games LLC](https://appshunter.io/developer/1281721366)
- Category: Games, Role Playing, Simulation
- Price: Free with in-app purchases
- Rating: 4.72/5 from 837 App Store ratings · 36 written reviews indexed
- Age rating: 9+
- Requires: iOS 11.0 · 167 MB
- Languages: English
- Released: 2020-09-08
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/idle-monster-frontier/id1523328443/reviews.md

## What is Idle Monster Frontier?

Collect monsters and combine them to become the epic heroes of the frontier in this idle RPG.

Long ago, the Old Gods, heroes of a forgotten era, united their tribes to purge The Darkness from the monster world. Now, The Darkness has returned, and the Old Gods are blind to the threat. It's up to you to collect monsters from every tribe, and combine them to save the world from endless darkness in this idle rpg.

If you're looking for one of the best monster collecting games, or one of the best idle rpg games, look no further.

MONSTERS AS HEROES
Build a team of heroes by collecting monsters. There are over 150, and more to see. Merge monsters to double their power to prevail in monster battle.

MERGE MONSTERS TO LEVEL UP
Unlock monster fusion to merge monsters into legendary heroes. Combine monsters to unlock extra slots for skilling.

SKILLING YOUR MONSTERS
Each monster has up to 6 skill slots, depending on their rarity. Epic monsters and Legendary monsters have more skill slots. Skilling is just as important as leveling.

IDLE CLICKER GAMES MECHANICS
With generous offline progress and offline earnings, your monster heroes never sleep. You can even capture monsters offline! Sit back and watch the idle action game unfold while your legendary heroes clash in this auto RPG. Prestige to the next level when you're ready for more epic monster collecting.

AN ENDLESS FRONTIER TO EXPLORE
The idle adventure never ends. With incremental mechanics and no damage, distance, or level caps, this endless auto idle rpg game is not your average monster collecting game. Monsters adventure through the frontier and win monster battles to collect monsters and gold to bring back to your base. Discover new areas and strategies. 

AUTO RPG WITH POTIONS AND SPELLS
Adventures always start at your home base. Command your monster team to explore the frontier, then sit back while auto rpg mechanics take control of the monster battles. You can use potions and spells to help your monster team battle.

HOME BASE BUILDING
Level up your home base to unlock potions and spells. New options for skilling and leveling up unlock as you reach new distances and buy buildings. Explore monster fusion in the Secret Lab, and participate in monster sacrifice at the Altar for permanent boosts.

DEFEAT EPIC BOSSES AND CLIMB THE TOWER
After you prestige, your monster team can enter the Tower to battle legendary heroes and epic monsters. Defeat every monster team in battle to climb the tower. Collect gems and monster rewards for every victory.

## Key features

- Collect over 150 unique monsters
- Merge monsters to increase power and unlock skills
- Generous offline progress and earnings
- Explore an endless frontier with auto-battles
- Home base building for upgrades and new options
- Climb the Tower by defeating epic bosses

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 100 Gems | $4.99 | one-time |
| 225 Gems | $9.99 | one-time |
| 3500 Gems | $99.99 | one-time |
| 500 Gems | $19.99 | one-time |
| Drop Boost | $9.99 | one-time |
| Boosts Bundle | $19.99 | one-time |
| Aether Bundle | $19.99 | one-time |
| Good Monster Set | $9.99 | one-time |
| Better Monster Set | $19.99 | one-time |
| Best Monster Set | $39.99 | one-time |
| Legendary Bundle | $19.99 | one-time |
| Third Team | $9.99 | one-time |
| Tower Bundle | $19.99 | one-time |
| Epic Bundle | $9.99 | one-time |
| Accursed Bundle | $19.99 | one-time |


## What do users think of Idle Monster Frontier?

Overall sentiment: positive

**Pros**

- 🚀 Solid overall game
- 👍 Deep customization and frequent events
- 👍 Satisfying gameplay and engaging mechanics
- 👍 Great art style
- 👍 Optional ads
- 👍 Responsive developer

**Cons**

- 🐛 Ads crashing the game
- 💰 Progression gated behind paywalls
- 🔍 Lack of quality of life features
- 🔍 Unclear monster stats and skills
- 🔍 Small font size
- 🐛 Buggy save feature

**Commonly reported bugs**

- Ads crashing the game
- Buggy save feature

**Most requested features**

- Sticker/peeling mechanics
- Faster healer attack speed
- Larger font size
- Public Discord server

## Recent user reviews (10 of 36)

All indexed reviews: https://appshunter.io/ios/app/idle-monster-frontier/id1523328443/reviews.md

### 5/5 — Really good

*2024-06-16, version 2.3.0*

Should get more attention, solid overall, has deep customization and frequent events

### 4/5 — STICKERS?!?!!

*2023-07-17*

Genuinely haven’t spent any money (yet) and am already enjoying the game a ton. The aesthetic, dungeon crawling vibe and over all vibes of the game are awesome! I really wish there were more sticker adjacent aspects to the overall experience. even if they were just visual enhancements or gimmicks that held very. Peel an apple here and there, but what if I peeled away the tree revealing a new path, chests, rare mob ect. Other than that pretty solid game for the busy gamer.

### 1/5 — It says “offline earnings”

*2023-04-26, version 2.3.0*

Yet I can’t get no idle rewards when I’m walking to work such a trash game don’t download unless you want ti waste cellular on this dumb game that claims to be offline

### 2/5 — Cash-Grab Siralim

*2022-12-19*

Core gameplay being decent baited me into a purchase I regretted once I saw how the entire game is centered around making you pay to remove intentional inconveniences. Go play Siralim ultimate instead and support a dev who sells a product instead of turning you into one.

### 5/5 — Great Idle Game Overall

*2022-11-25*

Very good game for the easy idle player. Easy to play and has a decent diversity and units and typing. 
One issue I’ve had is with the healer unit, it never attacks in time to activate the heal so my units ahead of it never benefit from having the healer. Maybe make it not attack activated or make the healers attack speed faster overall. That’s my only issue. Good game!

### 5/5 — Really outstanding - keep up the updates!

*2022-09-03*

Super cute, really good graphics. I’m absolutely HOOKED.
I can’t wait for future updates and more content. ❤️

### 5/5 — Very enjoyable way to burn half a day!

*2022-08-31, version 2.2.0*

Fun with party building mechanics.

### 2/5 — Cheeky P2W

*2022-06-17*

I’ll start off saying that this game’s overall construction is good. If you just want to mindlessly play, it works. But, if you actually want to optimize a team, you are never going to get anywhere. For some reason, they decided attack order should be based on a randomly generated and assigned attack speed, so a monster could be everything you’re looking for but juuuuuuuust not have a low or high enough attack speed so it doesn’t actually work with your team. Tanks won’t attack so they won’t heal themselves, or your DPS can’t get last hits, etc. Turns the game into a huge grindfest to get a perfect stat empty epic or master monster at the one frontier you’ve been grinding, just to progress a little and do it all over again. Not to mention the myriad of absent quality of life additions. I see now why this game really doesn’t have a following

### 3/5 — Game buggy

*2022-06-12, version 2.2.0*

I can’t click anything

### 5/5 — Fun game, thanks Nox

*2022-05-19*

Great art style, very satisfying gameplay and engaging mechanics. I’m not a huge fan of most “idle” games as they’re mostly pretty simple with little complexity beyond “number get bigger,” but this game has a very engaging level of micromanagement and complex interactions that keep the player invested. There are a staggering number of possible teams and I personally get a lot out of theorizing different builds and monsters. Also, I deleted my save file like a moron and contacted support, got my account back first thing the next morning. Thanks Nox! In conclusion, fun game, great customer support.

## Frequently asked questions about Idle Monster Frontier

### What is Idle Monster Frontier?

Idle Monster Frontier is an idle RPG where players collect and merge monsters to form powerful hero teams. The game features auto-battles, offline progression, and an endless frontier to explore, all aimed at saving the monster world from darkness.

### How do I make my monsters stronger?

You can make your monsters stronger by collecting them from various tribes and merging them together. Merging monsters not only increases their power but also unlocks extra slots for skilling, which is crucial for their effectiveness in battles. You can also level up your home base to unlock new potions and spells to aid your team.

### Is Idle Monster Frontier free to play?

Yes, Idle Monster Frontier is free to play. It offers in-app purchases and also includes advertisements. Players can progress and enjoy the core gameplay without spending money, though purchases can accelerate progress or unlock certain features.

### Can I play Idle Monster Frontier on my device?

While specific compatibility details are not provided, this app is designed for mobile devices. Typically, such games are available on both Android and iOS platforms. It's recommended to check your device's app store for exact compatibility information.

### What are the main gameplay loops in Idle Monster Frontier?

The main gameplay loops involve collecting monsters, merging them to create stronger heroes, engaging in auto-battles across an endless frontier, and upgrading your home base. You can also participate in the Tower for challenging boss battles and climb the ranks after prestiging.

## Version history (last 5 releases)

### 2.3.0 — 2022-10-24

New weekends: Crack in the Aether and Fused and Furious
New monsters: Lapis Manalis and Maestro Malaperi
New traits: Bide, Bug Zapper, Feast, Harmony, Unity												
Add hidden stats page
Add calendar of events to player's guide
Tons of fixes

### 2.2.0 — 2021-11-20

- Accursed Dominion event will run Nov 22-26 with 9 new monsters!
- List traits in learned order on monster info page.
- Change insta-kills (Bushido, Vainglory) to not proc against own team.
- Fix description of Mega HP potion.
- Fix offline progress dialog to show for time warps (it gave rewards you just couldn't see it.)

### 2.1.1 — 2021-10-16

- Add 6 hour time warp.
- Allow fusing into a monster while it's vaulted.
- Fix Legendary rarification preview.
- Fix first transformer tutorial message.

### 2.1.0 — 2021-10-06

- NEW BUILDING: Alchemist. Transform and Condense potions into mega and multi-potions. Sacrifice monsters to the Rarifier for a monster of a higher rarity.
- Keep for next tribute in the auto-scrapper will now keep dummies until the tribute is fully satisfied by dummies.

### 2.0.9 — 2021-09-08

- Activate Dark Carnival Aether event for Sep 10.
- Add 30% off time warp sale to Wednesday promo rotation.
- Fix not being able to reach outpost flags at certain resolutions.
- Change upgradable boost IAP buttons to say MAX when they're maxed instead of just graying out.

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## More apps by Iron Horse Games LLC

- [Tap Tap Dig - Idle Clicker](https://appshunter.io/ios/app/tap-tap-dig-idle-clicker/id1085983127)
- [Idle Sword 2](https://appshunter.io/ios/app/idle-sword-2/id1281721367)
- [Swarm Simulator: Evolution](https://appshunter.io/ios/app/swarm-simulator-evolution/id1320056680)
- [Knights of the Card Table](https://appshunter.io/ios/app/knights-of-the-card-table/id1446458015)
- [Clicker Knight](https://appshunter.io/ios/app/clicker-knight/id1454888812)

All apps by Iron Horse Games LLC: https://appshunter.io/developer/1281721366

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*