# Hollowline: Tunnel Ball Rush — One-Finger Reflex Runner

> One-Finger Reflex Runner (iPhone/iPad app by Ozkan Yilmaz.)

- Source: https://appshunter.io/ios/app/hollowline-tunnel-ball-rush/id6814838942 (this page in markdown: same URL + `.md`)
- Developer: [Ozkan Yilmaz](https://appshunter.io/developer/1708878442)
- Category: Games, Action, Casual
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 169 MB
- Languages: American English
- Released: 2026-10-08
- Data updated: 2026-10-29

## What is Hollowline?

Press anywhere and the ball starts rolling. Slide your finger to steer it through a glowing tube that bends, narrows and fills with obstacles. Let the ball hit a wall and the run is over.

Hollowline is built around one rule: every stretch of track you see has been checked before you see it, so every gap can be cleared with one finger. When you fall, it was the line you took, not the level.

WHAT IS INSIDE
• 120 levels in a single Journey across 6 worlds, from Abyss Reef to Candy Reactor
• Flow mode: an endless run for when you just want to keep going
• A daily challenge on the same track for everyone
• 18 ball cores to collect with the sparks you pick up along the way
• Near-miss moments that reward cutting it close

CRASHED? ROLL ON
A crash does not have to end the run. The big button on the card plays one short video and puts the ball back on the track right where it hit; if the video will not load, you get that revive anyway, once per run. Would rather start over? The small retry button is always there: a level's first retry is free, later ones play a video. No ad ever cuts into a run. Now and then a short one plays between runs, and a video can double the sparks a run earned.

EVERY LEVEL REMEMBERS YOUR BEST
Each level keeps its three medals and the furthest point you have reached, so the card after a crash shows how close you came. Flow and the Daily keep their best distances, and your day streak and cores are kept with them in the game on this iPhone.

One finger. One ball. How far can you roll?

## Is Hollowline safe?

Not enough ratings yet to assess Hollowline.

## Is Hollowline legit?

Hollowline: Tunnel Ball Rush appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Hollowline is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.2 — 2026-10-12

Crashed? The big button now plays a short video and puts you back exactly where you hit. If no video loads, that revive is on us once per run.

### 1.0.1 — 2026-10-08

No release notes.

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## More apps by Ozkan Yilmaz

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- [Distill: Water Sort Puzzle](https://appshunter.io/ios/app/distill-water-sort-puzzle/id6800235156)

All apps by Ozkan Yilmaz: https://appshunter.io/developer/1708878442

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-29.*