NecroMerger - Idle Merge Game

Contains adsIn-app purchases
68.8K reviews
Content rating
Everyone
1M+
Downloads
Content rating
Everyone
Mild Fantasy Violence
In-Game Purchases (Includes Random Items)
Learn more
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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 monsters (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 new 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 stronger (and even more tasty) minions. Manage your lair and monsters 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
• 100+ minions to spawn and merge.
• Minions have unique abilities to manage (resource generation, damage, deliciousness).
• Create new Forgotten Minions by merging different types of minions together.
• Unlock powerful Legendary Minions with big benefits.

Expand your Lair
• Expand your lair. Unlock new equipment including; graves, altars and portals.
• Attract champions, merchants and thieves to your lair.
• Complete feats, master spells, brew potions.
• Use a unique prestige mechanic that takes you to unexpected places.

Events
• Take part in distinct repeatable events with special mechanics. You’ll battle your sister, keep bees and travel back in time.
• Head outside the lair to play seasonal events, whether that’s organising your own birthday party or playing Santa.
• Unlock unique skins and themes to change up your lair and its inhabitants.

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.
Merge monsters to feed the Devourer in this idle merge game mashup!
Updated on
Oct 14, 2026

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

66.5K reviews
C7RL_ALT
November 23, 2022
Seems solid enough. Good fusion between merge and idle gameplay, I enjoy merging to create my idle resources. Fair warning, I tend to need to AFK for multiple hours at a time, only to make a small amount of progress and need to wait all over again. Ads help mitigate this, but only 4 ads a day, you're mostly on your own. Still, and idle game that requires idling isn't exactly the worst thing I can say, is it?
3 people found this review helpful
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Dallin McKinnis
October 29, 2022
Where do I start? This game is simplicity itself, no ads (unless you want to refill your mana up to 4 times a day, or some other rewards). The most appealing part of this game to me personally is the music and how the characters seem to at times, dance to the rythm of the music. I highly recommend this game if you just want a super entertaining and catchy game that doesn't require any skill. Just make sure that when you play, you turn that volume up and Bob your head with the characters.
8 people found this review helpful
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Ashlyn Rose
November 14, 2022
This is a fun little merger game, pixel graphics, and a decent little soundtrack to it too. I tend to be the kind to buy ad free purchases to support the developer. You combine little things and the big things including the things that give you the small things to make a higher chance at the bigger things. There's not really a pay to win, it is still a idle game, but overall fun little game to check in on every hour or when you have a moment.
2 people found this review helpful
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What’s new

+ Large technical update.
Content rating
Everyone
Mild Fantasy Violence
In-Game Purchases (Includes Random Items)
Learn more

App support

About the developer
GRUMPY RHINO GAMES LIMITED
support@grumpyrhino.com
Unit 405 Exmouth House, 3-11 Pine Street LONDON EC1R 0JH United Kingdom
+44 20 7953 2233

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