Comparison

Cataclysm vs GnollHack

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Cataclysm

A challenging post-apocalyptic survival roguelike with procedural generation. Explore, craft, and manage your needs to stay alive in a world overrun by monsters. Build, customize vehicles, and discover secrets in a vast, open-ended experience.

Highlights
  • Procedural world generation
  • Deep crafting system
  • Vehicle construction and modification
  • Survival mechanics (hunger, thirst, morale)
  • Bionics and mutations
  • NPC interaction and quests
  • Open-ended exploration
Features
Read full description

Cataclysm: Dark Days Ahead is a post-apocalyptic zombie survival roguelike game with procedural world generation. It is heavily focused on crafting and exploration. The game is set in near-future New England after a catastrophic event killed most of the human population and spawned various monsters and hazards. Surviving is difficult: you have been thrown, ill-equipped, into a landscape now riddled with monstrosities of which flesh eating zombies are neither the strangest nor the deadliest. Unlike most roguelikes, it has no goal: the player is free to explore the procedurally generated map, clear areas of monsters, work with NPCs, and build shelters and vehicles. The gameplay is mainly based on day-to-day survival, and the game tracks parameters like hunger, thirst, morale, illness and temperature which the player must manage to stay alive. There are several other things in the game such as NPC Quests and Secret Structures. Cataclysm: Dark Days Ahead is heavily focused on crafting with many basic necessities such as clothing and food being craftable from raw items that are found lying around. There are several professions and scenarios to choose from during character creation, as well as a variety of positive and negative traits. The game also provides the player with a robust platform to construct structures and build/modify vehicles. The game includes vehicles, bionics, mutations, realistic fire and smoke effects, real-life seasons and a wide array of combat and crafting skills. Cataclysm: Dark Days Ahead is licensed under CC-BY-SA 3.0 Original author: Whales (retired) Project Manager: KevinGranade Website/Forum: GlyphGryph Current Main Developers/Github Managers: KevinGranade, Rivet-the-Zombie, BevapDin, Coolthulu, i2amroy For a full list of contributors please see: https://github.com/CleverRaven/Cataclysm-DDA/contributors

About

GnollHack

Embark on a perilous quest in a remastered classic roguelike. Explore procedurally generated dungeons, battle monsters, and uncover powerful artifacts. With deep strategy, a rich class and race system, and challenging permadeath, every playthrough offers endless replayability.

Highlights
  • Turn-based roguelike gameplay
  • Modern user interface
  • Procedurally generated dungeons
  • 13 classes and 5 races
  • Hundreds of items and spells
  • Challenging permadeath mode
Features
Read full description

ABOUT GnollHack is a remastered and enhanced version of the classic roguelike game NetHack, one of the most iconic games developed in 1980s and 1990s. With GnollHack, you get: - Traditional roguelike with turn-based gameplay - Modern user interface - Legendary strategic depth of NetHack - Endless replayability - Several new features, enhancing your gameplay experience STORY In GnollHack, you are a hero sent by your deity into the perilous Dungeons of Doom, tasked with recovering the stolen Amulet of Yendor from the clutches of the malevolent god Moloch, who has hidden it in the fiery depths of the underworld. Along your journey, you will encounter formidable enemies, discover great magical artifacts, and strive for glory. You must either triumph or perish in the attempt. ROGUELIKE GAMEPLAY Explore procedurally generated dungeons filled with monsters, traps, and treasures. RICH CLASS AND RACE SYSTEM - 13 classes: wizard, barbarian, rogue, etc. - 5 races: human, elf, gnoll, etc. DEEP ITEM AND MAGIC SYSTEM Hundreds of items, spells, and artifacts with diverse effects. CHALLENGING PERMADEATH (Classic Mode Only) Death is permanent, requiring players to adapt, plan, and learn from mistakes to progress further. TUTORIALS AND GAMEPLAY INFORMATION - GnollHack wiki: https://wiki.gnollhack.com SUPPORT - Discord: https://discord.gg/cQuExnzUQy

Screenshots

Cataclysm4 screens
GnollHack4 screens

Verdict

The call

The clearest difference is rating: GnollHack at 4.7 against Cataclysm's 3.9. GnollHack also leads on in-app purchases (none vs 1) and update cadence (every 5 days vs every 3 weeks). Cataclysm's advantage is iOS requirement (7.0 vs 15.0). On price, ratings volume, ads and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Cataclysm sells 1 one-off in-app purchase. GnollHack asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

GnollHack holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 323 and 111 respectively. Written reviews point the same way: 69% of Cataclysm's written reviews are positive against 85% of GnollHack's.

UpkeepUpdate frequency

Cataclysm ships an update every 3 weeks, GnollHack every 5 days. The most recent releases landed on October 18, 2026 and October 20, 2026 respectively.

Scorecard5 real differences · 5 level
Cataclysm versus GnollHack: the parameters behind the verdict, then further details
ParameterCataclysmGnollHack
PriceFreeFree
Rating3.9 (323 ratings)4.7 (111 ratings) — better
Positive reviews68.6% of reviews85.2% of reviews — better
Number of ratings323 — better111
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better15.0
Further details — not scored
Size146 MB772 MB
Age rating12+9+
DeveloperDancing BottleHyvän mielen pelit ry

Customer experience

Cataclysm

All ratings323 ratings
Positive72.4%
Neutral4.6%
Negative22.9%
Written reviews245 reviews
Positive68.6%
Neutral8.2%
Negative23.3%

GnollHack

All ratings111 ratings
Positive94.6%
Neutral2.7%
Negative2.7%
Written reviews27 reviews
Positive85.2%
Neutral3.7%
Negative11.1%

Bugs and requests

Cataclysm

Reported bugs

3 issues
  • Keyboard issues (gets stuck, doesn't work properly)
  • Compatibility issues with newer devices/iOS versions
  • Crashes and freezes

Requested features

4 requests
  • Update the game to latest stable version
  • Improve touch controls and UI for mobile
  • Add screen zooming/magnification options
  • Provide better language support and options

GnollHack

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Cataclysm

One-time1
  • Awesome Sound Pack$0.99
None

GnollHack

No in-app purchases

Questions

Is Cataclysm free?
Cataclysm is free to download, with in-app purchases available.
Is GnollHack free?
GnollHack is free to download, with no in-app purchases.
Which has better reviews, Cataclysm or GnollHack?
GnollHack is rated higher. Cataclysm averages 3.9 out of 5 from 323 ratings, while GnollHack averages 4.7 from 111 ratings.
Do Cataclysm or GnollHack have ads?
Neither Cataclysm nor GnollHack shows ads.
Which is updated more often, Cataclysm or GnollHack?
Cataclysm ships an update every 3 weeks, and GnollHack every 5 days. Most recently, Cataclysm was updated on October 18, 2026 and GnollHack on October 20, 2026.

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