OnceWorld icon

OnceWorld v1.1.2

Contains ads • In-app purchases

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About this app

Developer Description

OnceWorld is a simple and casual 2D solo-play RPG.

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.

What's New

ver1.1.2
- Volcano NPC translation fix
- Status screen display bug fix
- Quest tracker

In-app purchases

$0.99 - $99.99 per item

Version Information

Version
1.1.2
Downloads
10K+
Updated on
Jan 2, 2026
Released
Dec 5, 2025
Requires
Android 9

Statistics

Google Play Rating History

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Rating Distribution

Total Ratings:

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OnceWorld - Google Play Rankings

No ranking data available yet. Rankings are updated daily.

#38 in Top Free Role Playing in Japan

OnceWorld users say on Google Play

★★★★★
Tony Jackson Tony Jackson

well I like the game so far. your character attacks automatically as soon as you come into attacking range of an enemy, and levelling progresses pretty fast. has the retro look and vibe, and many enemies are scattered around the multiple fields and are all of varying lvls. I haven't tried to play this offline yet, but I'm almost certain you can't. You can also capture monsters in the field, even boss monsters, and have them fight with you! All in all, I'd say this is an A tier work so far.👍

2 Dec 6, 2025
★★★★
Genti Berdynaj Genti Berdynaj

better than the RE game. But a map would be nice. having to discover and then remember where all the zones are is tedious.

1 Dec 5, 2025
★★★
David Diy David Diy

Simple, fun, grindy. As of version 0.9.9, sometimes crashes with some progress lost.

1 Dec 23, 2025
★★
Trev Dew Trev Dew

After playing for awhile it got super boring with nothing to do. Level up in the exact same spots to 100+, rebirth, repeat. Bosses are severely unbalanced and ruins the whole mood. Goes from something I can beat before lvl 100, 0 rebirth to something that does over 10k in a single hit. Requiring me to get at least 20 rebirths for the stats I think is almost enough.. probably isn't.

1 Dec 21, 2025
Trevor Bennett Trevor Bennett

amazing game, but literally stuck at the dragon in the desert. no desert powder anywhere. I've fully explored every region, wandered for hours, I've been 100 for days. the portal lady still thinks I'm looking for the portal energy even though I have it. frustrating!

1 Dec 25, 2025

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