NecroMerger - Idle Merge Game 12+

Merge monsters, feed your pet

Grumpy Rhino Games LTD

Designed for iPad

    • 4.8 • 2.8K Ratings
    • Free
    • Offers In-App Purchases



The Devourer is always hungry and it’s your job to feed it in this idle merge game mashup. Play as the NecroMerger and use dark magic to summon an array of creatures (skeletons, zombies, demons, banshees… the list goes on). Merge them from piddly little grunts into massive (and tasty) brutes, before feeding them to your ever hungry pet.

As you grow your Devourer you’ll attract the attention of merchants, champions and even rivals. Some can be useful, others must be fought… or fed to your insatiable pet. The bigger the Devourer grows the more your lair will expand and you’ll unlock powerful abilities and spells.

Complete tasks to unlock new stations and equipment… graves, altars, fridges and even a bathtub to hold excess slime. New stations will let you summon new, stronger (and even more tasty) creatures. Manage your lair and your underlings to maximize your resource generation.

NecroMerger is a whole new type of game, which combines merge and idle mechanics with resource management to create something truly unique.

Grow Monsters
+ 70+ creatures to spawn and merge.
+ Creatures have unique abilities to manage (resource generation, damage, deliciousness)
+ Legendary Creatures with massive benefits.

Expand your Lair
+ Expand your lair. Unlock new equipment including; graves, supply cupboards, lecterns.
+ Attract Champions, merchants and thieves to your lair.
+ Complete tasks, master spells, brew potions.

Idle Merge Mashup
+ A unique system of resource management.
+ Resources generate even when you’re offline.
+ Months of fun!

From the makers of Idle Apocalypse and Idle Mastermind, NecroMerger has all the humour and inane chatter you’d expect of a Grumpy Rhino Game.

What’s New

Version 1.49

+ Added the "Rhino" skin for the Devourer and the "Potion Stone" skin for the Tip Stone.
+ Large technical update and bug fixes.

Ratings and Reviews

4.8 out of 5
2.8K Ratings

2.8K Ratings

Jesus vision ,

The only game I don’t get bored of!

When I downloaded this game, I expected my interest to only last a month or two at the most. The majority of games I download end up losing my interest relatively quickly, but this game just keeps me coming back! Since downloading the game many months ago, I’ve opened it nearly every day. The art is fantastic as it is very stylized and polished, it is apparent the amount of love that was put into this game by the amount of little details you come across while playing.
As I progressed in the game, I was continuously surprised by the amount of content that is available completely free. There are no gameplay elements locked behind a paywall, and the ads are non existent except for unlocked small bonuses here and there. The only paid content in this game is optional, and is simply a way to progress faster or unlock themes and costumes.
The gameplay is simple, yet satisfying. The many different minions along with the journal to keep track of unlocked minions keeps me coming back for more, I love discovering each new creature, the variety seems endless and filling out your minion “Pokédex” is always enjoyable.
Overall, a fantastic game. I thank the developers for bringing a fresh new take on the merge genre of mobile games onto the table, and for making it as polished and ad-free as it is.

Noxave of Fire Stars ,

Fantastically Designed

I’ll get straight to the point so you don’t have to waste your time reading a long review: this game is unlike any other idle gamer or merger game I have ever played. There is NEVER a paywall preventing progress towards the endgame, all “premium” currency is acquirable in F2P at a reasonable pace (with barely any of it needing to be spent to progress), and every single ad in the game is completely optional. The gameplay itself is phenomenal; I love the unique graphics and engaging content. Everything you do feels meaningful and the events are fun and not really time-limited P2W events. There are some annual events, but these are largely F2P and come around next year if you don’t get all the rewards. There’s also playable minigames that refresh every week so that you have as many chances as you need to win their rewards. I’ve never felt pressured for time-limited options or pushed back by a paywall preventing progress here, and anyone that says otherwise either (1) doesn’t full understand the game, or (2) is just straight up lying. 10/10 game, super fun, well-designed, and listens to community feedback! Go grumpy rhino‼️

Seditivewhisper ,


This is by far, one of the most addicting and fun apps that I’ve ever played. This game has so much quality, and I mean real quality not any of that “oH oUr GaMe HaS gOoD gWaPhIcS :)))))))” and then it shows a still image of a ps1 quality character model NO. This game has class. CLASS. The music is ACE. The sprites are ACE. The design is so good and you don’t even have to pay anything. This game is not pay to win at all, though I will admit the events are hard to complete on time but it’s still possible. Oh and this game is actually funny. It has good jokes that made me hoot and holler UNIRONICALLY. The dialogue between characters is so nice and well thought out and you can just tell this game has so much passion and care and heart in it that brings me back to the days when doodle jump and pocket god were popular. If you want even more games from these guys check them out, they’re games are even connected to eachother. All in all, this a great game and if you don’t download it you’re missing out on good music, good jokes, good designs, fun gameplay, and a group of developers that actually care. You guys are legends.

App Privacy

The developer, Grumpy Rhino Games LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data

Data Linked to You

The following data may be collected and linked to your identity:

  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Game Center

    Challenge friends and check leaderboards and achievements.

More By This Developer

You Might Also Like

Idle Cave Miner
Grimoire Incremental
Tap Wizard 2: Idle Magic Game
IdleOn - Idle RPG
Realm Grinder
Idle Research