NecroMerger - Idle Merge Game

Contains adsIn-app purchases
4.7
58.6K 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
56.7K reviews
Corbin Egan
April 27, 2025
The game is fine, same tropes of like, every title like this, with rebirths, special events, the works. the mechanics are unique to the game and the artstyle, but the fact that the stuff you have to use to make your monster is locked behind a wait-wall makes it a bit annoying. I know it's a bit more of an idle game, and that's respectable, but you know... Maybe make the interaction interactive. it's more fun to not have to wait 10 hours for anything interesting to happen.
10 people found this review helpful
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Perrin Graves
May 2, 2025
The single best merging game I have ever played, without a doubt, it is fun. there's plenty of content. it's always updating and there's no way to get stuck, there's no push ads and you don't have to play the game with ads, but they can help make the game a little faster, plus they're only 30 seconds long at most, there's also fun events to help you progress through the game faster, overall, I absolutely recommend for a Time killer. also nice community
2 people found this review helpful
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Cerulean Church
May 2, 2025
Probably the only merger game I've totally taken to. The aesthetic is different, and it's a lot of fun to keep coming back to. Also, I am a sucker for games that use ads as an optional upside rather than a hamfisted necessity and this game is great about that as well as offering the different currencies plentifully without having to outright buy them. Great game.
1 person 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.