NecroMerger - Idle Merge Game

Contains adsIn-app purchases
68.7K reviews
Content rating
PEGI 16
1M+
Downloads
Content rating
PEGI 16
In-Game Purchases (Includes Random Items)
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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

66.4K 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.
102 people found this review helpful
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Rob Eldridge
August 29, 2026
Great game! Being an idle game, it keeps you hooked but theres also only so much you can do each session so it doesn't eat up all of your time. The art style is fun, the theme works really well, the music is good - not really anything bad to say! There also aren't any intrusive ads - every one is optional. I'd highly recommend!
1 person found this review helpful
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Grumpy Rhino Games
September 3, 2026
Thanks for playing. :)
Hamzah Adewunmi
August 21, 2026
Best game everrrr. I love how you can rebirth and progress throughout the games story. Not to mention that the seasonal events are pretty cool and they need more updates like that. My only complaint is that we need an update log page in this game and some monthly updates. Other than that, it's a really good game, and I would recommend.
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Grumpy Rhino Games
August 24, 2026
Thanks for playing. :)

What’s new

+ Large technical update.
Content rating
PEGI 16
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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