RPG Offline: OS Core Quest

Category

Description of App

You are a modern-day white-hat hacker.
After countless sleepless nights, you collapse from exhaustion and fall asleep on your keyboard… then wake up in the year 2150!!!
You are trapped inside a collapsing digital world.
The Core System — the heart of this entire networked world — has been shattered into fragments after a mysterious catastrophe. Rogue viruses, corrupted AI, and mutated data entities are taking over every region of the digital OS.
As the last Restorer Hero, you must explore broken OS zones, collect the lost Core Fragments, and restore the system before the entire digital world is erased forever.
Uncover the truth behind this collapsing world, discover why you were brought here — and unlock hidden endings shaped by how you survive.
Uncover the Secrets of OS Core Quest
Collect 10 Core Fragments and discover what caused the digital world to collapse.
Each restored zone reveals another piece of the story behind the Core System’s fall.
Explore a neon cyber world built around classic turn-based RPG mechanics:
Move across tactical RAM grid maps
Battle bugs, AI viruses, system bosses, and dangerous data entities
Upgrade your character, equipment, and skills
Discover rare items and random rewards from Rare Chests
Complete quests to unlock new regions
Face enemies with unique abilities: Poison, Burn, Shield, Drain Energy, Summon…
Explore unique and dangerous cyber zones
Use Shop, Equip, and Item Upgrade systems to grow stronger
Compete on global leaderboards via Game Center
Fully offline — play anytime, anywhere
Can you collect every Core Fragment and save the Core System before the digital world disappears forever?

Terms of Use (EULA):
https://www.apple.com/legal/internet-se … v/stdeula/

Version

9.2

Free or Paid

Free With In-App Purchase

Device(s) App Was Tested On

iPhone

iOS Version

26

Accessibility Comments

VoiceOver Accessibility Added.
Map tiles, player position, rewards, battles, and key game screens now support VoiceOver for blind and visually impaired players.
To move in the map you can use the buttons at the bottom right. Voiceover will report most information using the hints and you can explore the whole map by exploring the screen. It will say the row, column and what's there, so you can collect items and prepare for the next battles.

VoiceOver Performance

VoiceOver reads all page elements.

Button Labeling

All buttons are clearly labeled.

Usability

The app is fully accessible with VoiceOver and is easy to navigate and use.

Other Comments

The game has music and sound effects. The developer was so kind to add accessibility to this great game!

Recommendations

2 people have recommended this app

Most recently recommended by matheus rheine 2 days 18 hours ago

Options

Comments

By Harmony 36 on Monday, June 1, 2026 - 09:15

Is there a way to turn off the music but still keep the sound effects on?

By dark on Monday, June 1, 2026 - 19:31

This is a really cool find, nice to see an rpg with such a different atmosphere.
Have completed the first two zones and am on to the third, and I'm definitely liking this.
A couple of things.

First: You can click on some tiles, but aren't told much about them, indeed some I had to stand on to tell what they do.
A log of events does appear close to the movement arrows, but its pretty difficult to catch, indeed I barely know how much I get from a text or how much hp or energy is restored when I stand on the correct tiles.

Would be great to have a movement log similar to Adventure to fate dungeons.

Combat has a similar problem, sometimes enemy actions are read sometimes not. So a log would really help.

Second, with some enemies like the malware slime and the glitch bat, the game says something about "build up attack and hit when guard is low."
I don't have anything that builds attack, I've got a basic attack , a debug skill that freeze the enemy, a hack skill thatt reduces enemy damage, and a panic skill which kicks in at low hp. And yes, I went with the first character class choice of core hacker since there wasn't much info to go on.
So, not only do I have no skills that build passive attacks or launch combos, but as far as I can tell the enemies don't specifically have a guard either, unless its not being read.
I haven't been able to buy much in the shop yet because items are locked.
Indeed it doesn't look as if there is much to buy, though you do get nice prizes for completing dungeons, and i'm finding some interesting items (like the things that permenantly increase defence and attack).

Lastly, as a miner point, the game's adds are annoying since you get one after every battle, and there doesn't seem to be any bonus for watching them.
So yes, I bought the premium version.

On the other hand, I certainly don't mind supporting a game where the developer is doing such a good job adding to accessibility anyway.
Well, back to violent debugging I go :D.

By Jonathan Candler on Monday, June 1, 2026 - 19:34

Why is there always devs that love to put music and sound into one category as a setting, second, why do devs feel the need to have the music so loud to the point of you not being able to hear your screen reader? I know there's audio ducking but that's not the point. Three, no settings for turning off or down the music at all? That really bothers me! At least turn down the music to a comfortable volume if you do not wanna put in a setting in for music toggle. Sighs. I do not understand, I just, don't. Please add in a setting for music, ASAP cause not everyone wants that but just wants sounds. Just puts me off from even trying to play the game.

By Jonathan Candler on Monday, June 1, 2026 - 19:49

The game is nice but a couple of accessibility problems I see right off the bat. Actually mainly just one. When you double tap on the move buttons they do not read out the events when you either move or get something. You actually have to double tap and hold and then release to actually get voiceover to read that info because when double tapping on the buttons Voiceover reads them again after double tapping and you do not need that. You only need the info. Same behavior happens in combat too.

By dark on Monday, June 1, 2026 - 20:18

Personally, I'm playing on an Iphone 17, just using the phone speakers, and Vo ducking is working fine for me, if you've got audio ducking turned off, maybe try turning it on?

Agreed on the lack of reading of movement or combat actions, that really does need looking at, though weirdly enough enemy actions do seem to read fine.

By matheus rheine on Monday, June 1, 2026 - 20:35

The latest update to the game now adds toggles for music and sound effects.
As for the movement in the map, the messages are actually being sent to Voiceover. there's just something blocking them, want to test it? if you double tap a direction but keep your finger on the screen for half a second it will say exactly where you landed.

By Jonathan Candler on Monday, June 1, 2026 - 20:50

I'm using audio ducking for now but the issue with that is it turns everything down and I do not like that. Yes enemy actions work fine but try this, double tap and hold until you here the sound then release on buttons and you'll see what I mean. Actually come to thing about it, announcements are being interrupted when the buttons are double tapped. For this reason, announcements may have to be set to queued via accessibility notifications when a button is pressed.

By Missy Hoppe on Monday, June 1, 2026 - 20:55

The very first thing I do when I get a game that has music is turn off the music whenever possible. I love sound effects, but music is a huge distraction. Cozy Sort Studio still has this issue to an extent; even though I set the music volume to 0, I can still hear music. It's less distracting, but 0 percent volume should mean no music. And yes, settings for music and sound effects should definitely be separate from each other. Games like Dawncaster and Dungeons and Such got it right, so I know it can be done.

By Jonathan Candler on Monday, June 1, 2026 - 20:58

Check my last comment before this one regarding interruptions. I do believe there is docs in apple developer documentation regarding announcement queuing and as stated that might be what needs to happen in this case in order for these announcements not to be blocked.

By matheus rheine on Tuesday, June 2, 2026 - 18:28

Great news everyone! I'm reporting all issues and the developer is delivering the fixes! We can now ear the messages when moving and collecting fragments, keys, items and starting battles. it should also automatically announce the attack damage during battles.

By dark on Tuesday, June 2, 2026 - 21:34

Nice we get battle sfx.

The auto announcements are good in theory, and they say everything that needs to be said, but unfortunately, they're only playing some of the time, either in battle or when moving.

Sometimes Jonathan's above tip of double tap and hold works, sometimes it doesn't.

Enemy actions always speak in battle, but yours don't tend to.
Indeed I'm not sure at this point whether hack cuts incoming damage or not, since right now its oddly enough doing less damage than my attacks :D.

Would be really nice if the announcements could be consistent with this.