# One Up Game

> Fast-paced number addition game to test mental reflexes. (iPhone/iPad app by Terry Billingsley.)

- Source: https://appshunter.io/ios/app/one-up-game/id1496374495 (this page in markdown: same URL + `.md`)
- Developer: [Terry Billingsley](https://appshunter.io/developer/593356509)
- Category: Games, Education
- Price: Free
- Rating: 3.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 11 MB
- Languages: English
- Released: 2020-01-27
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/one-up-game/id1496374495/reviews.md

## What is One Up Game?

So you think you can add quickly?   One Up Game gives you the chance to prove how much of a genius you really are.

Starting with level 1, you'll be presented with 4 numbers such as 1234, simply add 1 to each number using the keypad so that 1234 becomes 2345.  Do it as quick as you can within the time allowed.

Level 2 to 9 adds one to the number so that in level 2 you will have to add 2 to each number such as 1234 becomes 3456, then level 3 adds three to the number so that 1234 becomes 4567 until you reach the absurd level 9.   

You need a score of 3 or more points to pass the level, sounds easy right - let's see how you do.  If you're a real brain, then change the default score needed to something higher or change the timer from it's default to 15 seconds.

Be careful, if you enter a wrong number your score is reduced!

it's a fun game to test your mental reflexes and a great game for anyone trying to add numbers quickly.

Enjoy.

## Key features

- Quick addition challenges
- Increasing difficulty levels
- Customizable target scores
- Adjustable timer
- Score reduction for errors
- Mental reflex testing

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/one-up-game/id1496374495/reviews.md

### 3/5 — Fun game - but two small bugs

*2020-07-30, version 1.0*

Hello. I downloaded and tried this game today. More difficult than it seems! A nice added feature would be achievements or a leaderboard.

There were two minor issues that I would point out:

On the Settings screen there is a “Rate” option. Selecting “Rate” takes the user to the wrong app in the Apple App Store.

Also, the sharing option generates an incorrectly link to a different app. 

You will have more users reviewing this game and sharing it if you fix these two small problems!

## Frequently asked questions about One Up Game

### What is the gameplay of One Up Game?

One Up Game presents you with numbers and requires you to add a specific value to each digit within a time limit. The challenge increases with each level.

### Can I customize the difficulty in One Up Game?

Yes, you can adjust the difficulty by changing the required score to pass a level or by setting a shorter timer, making it more challenging.

### What happens if I enter a wrong number in One Up Game?

If you enter an incorrect number, your score will be reduced, adding an element of risk to the quick addition challenges.

### What devices is One Up Game available on?

One Up Game is available on iPhone, iPad, and iPod devices.

### What is the age rating for One Up Game?

One Up Game has an age rating of 4+, making it suitable for younger players and adults alike.

### How often is One Up Game updated?

One Up Game was last updated on January 27, 2020, with version 1.0. There have been no updates since its release.

### Does One Up Game have ads?

The provided data does not specify if One Up Game contains advertisements. It is listed as free with no mention of ads or in-app purchases.

### What is the user rating for One Up Game?

One Up Game has a rating of 3.0 stars based on one user review.

## Version history (last 1 release)

### 1.0 — 2020-01-27

No release notes.

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## More apps by Terry Billingsley

- [WattchIT](https://appshunter.io/ios/app/wattchit/id593356246)
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- [My Life's Goal](https://appshunter.io/ios/app/my-lifes-goal/id739281029)
- [My True Self](https://appshunter.io/ios/app/my-true-self/id817030928)
- [Pain Tracker](https://appshunter.io/ios/app/pain-tracker/id938053510)
- [CopyrightsNow](https://appshunter.io/ios/app/copyrightsnow/id1067430628)

All apps by Terry Billingsley: https://appshunter.io/developer/593356509

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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 2026-06-10.*