Comparison

Galaxymus Dungeons vs OnceWorld

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

Head to head
About

Galaxymus Dungeons

Embark on an endless roguelike adventure, dashing through randomly generated dungeons filled with traps and puzzles. Escape a pursuing dragon, uncover ancient secrets, and unlock new zones as you strive to break your own records in this retro-inspired pixel art experience.

Highlights
  • Endless procedurally generated dungeons
  • Real-time dash and dodge reflexes
  • Customizable one-handed or swipe controls
  • Action puzzles and hidden rewards
  • Leveling system with unlockable zones
  • Retro-inspired pixel art graphics
  • Offline play
Features
Read full description

Galaxymus Dungeons is an action-packed roguelike endless runner where every run is deadly and different! Dash through infinite dungeons, escape from an ancient dragon, and uncover the secrets of a lost dwarven civilization! ENDLESS RUNNING, INFINITE CHALLENGES Survive dangerous platforming environments that are constantly and randomly generated. Keep running, dodge deadly traps, and collect treasures while a terrifying dragon hunts you down! BREAK YOUR RECORDS Each run is unique! Test your real-time dash and dodge reflexes and push your limits in a single, continuous run. CUSTOMIZABLE CONTROLS Play your way! Choose between large buttons, one-handed controls, or swipe gestures to move your character. REAL-TIME ACTION PUZZLES Combine logic and fast reflexes to escape traps and unlock hidden paths. One mistake means game over — every move matters in this endless race! EXPLORATION & HIDDEN REWARDS Discover secret routes, solve on-the-run maze puzzles, interact with ancient mechanisms, and learn from each defeat. LEVEL UP & UNLOCK NEW ZONES Earn XP, complete quests, and unlock regions filled with tougher enemies, smarter traps, and deadlier surprises. LOST SCROLLS Find hidden clues and ancient knowledge essential to surviving the treacherous Dragon Peaks. THE LEGEND OF DWASGARD Piece together fragments of ancient wisdom and reveal the forgotten past of a lost mountain civilization. RETRO-INSPIRED PIXEL ART Every pixel is crafted with care! Dive into a beautifully stylized world of handcrafted pixel art. OFFLINE, FREE TO PLAY, NO LIMITS Download and play Galaxymus Dungeons for free, anytime, anywhere — even without an internet connection. Optional in-app purchases available. Download now and prove you're the ultimate survivor! How far can you run? Privacy Policy: https://cosmopix.games/en/privacy-policy Terms of Use: https://galaxymusdungeons.cosmopix.games/en/terms-service

About

OnceWorld

Experience a nostalgic 2D solo RPG that blends classic MMO charm with modern mobile convenience. Level up, customize your character with stat distribution, enhance gear, collect pets, and battle through a deep progression system.

Highlights
  • Stat distribution for character customization
  • Equipment enhancement and set bonuses
  • Monster capture and pet raising
  • Material collection for crafting and upgrades
  • Reincarnation system for continued growth
  • Abyss Corridor ranked mode
Features
Read full description

OnceWorld is a simple and casual 2D solo-play RPG. Relive the charm of classic MMOs from the good old days — now reimagined for mobile with easy controls and deep progression! Level up, reincarnate, raise pets, awaken equipment, collect materials, and battle in the arena — all in one nostalgic adventure. It’s an RPG that brings the essence of those mid-2000s MMORPGs to your smartphone, blending nostalgia with modern convenience. ▼ Stat Distribution Distribute points into seven basic stats to develop your character. Points are earned as your hero levels up. To reset your distribution, you’ll need a special item. Stat meanings: VIT – Increases HP SPD – Attack speed & number of strikes ATK – Physical attack power INT – Magic attack power & SP capacity DEF – Mainly physical defense power M.DEF – Mainly magical defense power LUK – Evasion & Physical Critical ▼ Weapons & Armor Equip one weapon and five armor pieces. Wearing all five pieces of a matching set grants a set bonus. Use the heart icon at the top-left to toggle your favorite gear display. ▼ Equipment Enhancement Use materials obtained during your adventures to enhance your gear. Each enhancement attempt has a success rate — failure consumes the materials, but the item itself will never break. Some special items can increase success rates. ▼ Accessories Accessories grant special effects when equipped. Defeating enemies while an accessory is equipped will level it up, enhancing its effects over time. ▼ Magic Spend SP to cast powerful spells. Magic attacks cannot be evaded and there are no critical hits. Certain rare materials may further amplify spell power. ▼ Monsters & Pets By carrying a special material, you’ll gain the ability to capture monsters. Captured monsters become pets that grow stronger as they fight alongside you. Some monsters learn skills as they level up. These skills can activate even without being summoned, as long as the monster is accompanying you. Pet switching can only be done at the Pet Keeper in your hometown. Feeding specific materials will raise a pet’s stats. ▼ Monster Encyclopedia Once defeated, monsters are added to the encyclopedia where their stats can be viewed. Captured monsters will display a “Caught” mark. ▼ Materials Materials are divided into three categories: Normal Materials  Used for equipment enhancement and trading. Effect Materials  Provide passive bonuses simply by owning them.  Have a smaller carrying limit. Key Items  Only one can be held.  Cannot be dropped or sold. ▼ Items Items that grant various benefits during adventures. You can assign them to shortcut slots for quick use in the field. Swap registered items using the arrow icon beside the item list. ▼ Reincarnation When your hero reaches the level cap, you can reincarnate. Reincarnation resets your level but increases your level cap and available stat points, allowing for further growth. ▼ Abyss Corridor A ranked mode that can be played a limited number of times per day. Clear each floor by defeating all monsters as fast as possible — faster times rank higher. Treasure chests appear as rewards on each floor. Only Save Slot 1 is eligible for ranking participation. ▼ Arena Watch monster battles. Watch monster battles held several times a day. Choose the strongest team from three teams and watch the battle. Earn Arena Coins if your favorite team wins. Try exchanging them for valuable materials at the Arena Shop. ▼ About the Kin-Slayer Rite ▼ The Kin-Slayer Rite is a ceremony in which the target pet’s kin-bond, level, and accumulated experience are all returned to zero in exchange for enhancing its base stats. A monster that undergoes this rite will gain experience at a slower rate thereafter.

Screenshots

Galaxymus Dungeons4 screens
OnceWorld4 screens

Verdict

The call

The clearest difference is update cadence: OnceWorld at every 2 days against Galaxymus Dungeons's every 3 weeks. OnceWorld also leads on ratings volume (132 vs 1). Galaxymus Dungeons's advantage is iOS requirement (13.0 vs 15.0). On price, rating, ads and in-app purchases 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. Galaxymus Dungeons sells 5 in-app purchases, starting at $7.99 per month and OnceWorld sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Galaxymus Dungeons against 4.9 for OnceWorld. That said, the two scores are not equally well evidenced: OnceWorld has 132 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Galaxymus Dungeons ships an update every 3 weeks, OnceWorld every 2 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Galaxymus Dungeons versus OnceWorld: the parameters behind the verdict, then further details
ParameterGalaxymus DungeonsOnceWorld
PriceFreeFree
Rating5.0 (1 ratings) — better4.9 (132 ratings)
Positive reviews—58.1% of reviews
Number of ratings1132 — better
Update frequencyEvery 3 weeksEvery 2 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size772 MB325 MB
Age rating4+12+
DeveloperCOSMOPIX GAMES LTDAPONIX LLC

Customer experience

Galaxymus Dungeons

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

OnceWorld

All ratings130 ratings
Positive96.2%
Neutral3.1%
Negative0.8%
Written reviews74 reviews
Positive58.1%
Neutral9.5%
Negative32.4%

In-app purchases

5 purchases

Galaxymus Dungeons

Subscriptions2
  • 30 days$7.991 Month
  • 1 year$69.991 Year
One-time3
  • 25$1.99
  • 75$4.99
  • 175$9.99
6 purchases

OnceWorld

One-time6
  • Crystals 10$0.99
  • Crystal 50$4.99
  • Crystal 150$14.99
Show 3 more
  • Crystal 300$29.99
  • Crystal 600$59.99
  • Crystal 1000$99.99

Questions

Is Galaxymus Dungeons free?
Galaxymus Dungeons is free to download, with in-app purchases available.
Is OnceWorld free?
OnceWorld is free to download, with in-app purchases available.
Which has better reviews, Galaxymus Dungeons or OnceWorld?
Galaxymus Dungeons is rated higher. Galaxymus Dungeons averages 5.0 out of 5 from 1 ratings, while OnceWorld averages 4.9 from 132 ratings.
Do Galaxymus Dungeons or OnceWorld have ads?
Both Galaxymus Dungeons and OnceWorld show ads.
Which is updated more often, Galaxymus Dungeons or OnceWorld?
Galaxymus Dungeons ships an update every 3 weeks, and OnceWorld every 2 days. Most recently, Galaxymus Dungeons was updated on October 24, 2026 and OnceWorld on October 30, 2026.

Other comparisons