NecroMerger - Idle Merge Game

Contains adsIn-app purchases
4.7
58.7K reviews
1M+
Downloads
Content rating
PEGI 7
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About this game

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 army 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 feats 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 minions to maximize your resource generation.

NecroMerger is a whole new type of game that 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 big benefits.

Expand your Lair
+ Expand your lair. Unlock new equipment including; graves, supply cupboards and portals.
+ Attract Champions, merchants and thieves to your lair.
+ Complete feats, 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 the humour and inane chatter you’d expect of a Grumpy Rhino Game.
Updated on
Apr 11, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.7
56.8K reviews
Chani Burton
February 1, 2025
Just read a review saying they don't like the restart mechanic. In this game it makes sense, you unlock different things at higher levels and it almost completely changes how you play to progress. I've been playing for years, paid for no ads and another relic space, that's all you really need and you get endless hours of merging. The events are the worst part of it, but they're completely optional. You won't want to wake up every couple of hours to maximise points and it's not good for you to.
41 people found this review helpful
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Anthony Dybacz
November 11, 2024
Great little game, super pixel graphics with loads of charm. It's great fun to merge the monsters and feed the Devourer. Caveat the next comments from the perspecive of playing for 3 days: The adverts are not overly intrusive (so far), and the monetisation is of the "want to do it quicker" variety rather than necessary (again, so far). I am enjoying the game.
14 people found this review helpful
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Niki Benton
April 16, 2025
This game is great to fill time. the ads are only if you want extra boosts while you play, so optional. I wish the cooldown time in the second room was faster, but it is still a nice and mind-numbing game. bonus is that it works without the internet, not the ad boosts, but just regular gameplay. I at least recommend playing if you are on spotty coverage so you can have a game to pass some time.
7 people found this review helpful
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What’s new

+ The NecroMerger is being 'SpringSpected'… If he wants to pass he’ll need to try his hand at good magic. Pull rabbits out of hats, grow giant beanstalks and grant wishes all to impress the SpringSpector. There are rewards for hard work, three skins, a new theme and loads of relics await those who can pass the test.
+ To start the SpringSpection event you must have a lvl 21 Devourer (or have prestiged) and unlocked and visited the Vault.