# Hyperbolic Games

> Educational games illustrating hyperbolic geometry and topology on curved surfaces. (iPhone/iPad app by Jeff Weeks.)

- Source: https://appshunter.io/ios/app/hyperbolic-games/id1352457149 (this page in markdown: same URL + `.md`)
- Developer: [Jeff Weeks](https://appshunter.io/developer/326104308)
- Category: Education, Games, Puzzle
- Price: Free
- Rating: 4.60/5 from 10 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 3 MB
- Languages: American English
- Released: 2018-02-24
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/hyperbolic-games/id1352457149/reviews.md

## What is Hyperbolic Games?

The Hyperbolic Games are similar in spirit to the Torus Games, but played on curved surfaces.  Most people will want to start with the Torus Games instead, which offer a selection of easily playable games, designed for children ages 10 and up, all implemented in multi-connected spaces in 2 and 3 dimensions.

The Hyperbolic Games, by contrast, are for math students — advanced undergraduates and beginning graduate students.  These games are more challenging than the Torus Games because they combine a multi-connected topology with a non-Euclidean geometry.  Mathematically they illustrate the following:

- The hyperbolic plane, as a live scrollable object.

- The under-appreciated fact that the two traditional models of the hyperbolic plane are simply different views of the same fixed-radius surface in Minkowski space:  the Beltrami-Klein model corresponds to a viewpoint at the origin (central projection) while the Poincaré disk model corresponds to a viewpoint one radian further back (stereographic projection).  Players may pinch-to-zoom to pass from one to the other, or stop to view the model from any other distance.

- The strong — but also under-appreciated — correspondence between the hyperbolic plane and an ordinary sphere.  In particular, central projection of the sphere corresponds to the Beltrami-Klein model of the hyperbolic plane, and stereographic projection of the sphere corresponds to the Poincaré disk model of the hyperbolic plane. 

- The Klein quartic surface, viewed with its natural geometry.  The sudoku puzzles take full advantage of the Klein quartic’s tremendous amount of symmetry.

## Key features

- Interactive hyperbolic plane exploration
- 2D and 3D multi-connected spaces
- Beltrami-Klein and Poincaré disk models
- Visualization of Klein quartic surface
- Sudoku puzzles with high symmetry

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/hyperbolic-games/id1352457149/reviews.md

### 1/5 — Advertisement

*2025-02-16*

As soon as I tapped the screen to start, it popped up an advertisement so I deleted this app.

**Developer response:** That message was just to let you know that most people would prefer to start with the Torus Games instead of the Hyperbolic Games. The Torus Games is another one of my apps, and is also completely free on the App Store. You can dismiss that message and continue with the Hyperbolic Games if you want.

### 5/5 — New Hyperbolic Games For IOS 15

*2024-12-29*

Could You Add Mahjong and sokoban and chess and golf and 4 in a row for iOS 15!

### 3/5 — Quite good

*2020-09-06*

It’s a really fun app but it could do with some more game modes 👍

### 5/5 — Games

*2020-07-08*

Can you please add more games like minesweeper and flappy bird?

### 5/5 — Infinite fun!

*2019-09-26*

It’s fun! I have a idea, add a few different geometries or add a border to some games, it would be cool to see sudoku with 5 squares around a vertex! Or pool with a ton of curviture!

## Frequently asked questions about Hyperbolic Games

### What is the main focus of Hyperbolic Games?

Hyperbolic Games focuses on illustrating advanced mathematical concepts like hyperbolic geometry and topology through interactive games. It's designed for students to explore these complex ideas in a visual and engaging way.

### What mathematical concepts does Hyperbolic Games explain?

The app explains the hyperbolic plane as a live scrollable object, the relationship between different models of the hyperbolic plane (Beltrami-Klein and Poincaré disk), and the correspondence between the hyperbolic plane and a sphere. It also features the Klein quartic surface.

### Who is the target audience for Hyperbolic Games?

Hyperbolic Games is intended for advanced undergraduate and beginning graduate students of mathematics. It is more challenging than the Torus Games, which are designed for younger children.

### What are the different models of the hyperbolic plane shown in Hyperbolic Games?

The app showcases the Beltrami-Klein model and the Poincaré disk model of the hyperbolic plane. Users can pinch-to-zoom to transition between these models and view them from different distances.

### Does Hyperbolic Games offer any puzzles or challenges?

Yes, Hyperbolic Games includes Sudoku puzzles that take full advantage of the Klein quartic surface's symmetry. These puzzles offer a unique challenge within the app's mathematical framework.

### Is Hyperbolic Games available on multiple devices?

Hyperbolic Games is available on iPhone, iPad, and iPod. It is designed to run on Apple's mobile operating systems.

### How often is Hyperbolic Games updated?

The latest version of Hyperbolic Games is 2.1.4, last updated on September 4, 2020. While not frequently updated, the app provides a stable educational experience.

### What is the user rating for Hyperbolic Games?

Hyperbolic Games has a strong user rating of 4.6 stars based on 10 ratings. This indicates a generally positive reception from its users.

## Version history (last 5 releases)

### 2.1.4 — 2020-09-04

Supports Wide Color displays

### 2.1.3 — 2020-04-02

- Launch-screen format satisfies new App Store requirement
- Toolbar height adapts to default for iPhone or iPad

### 2.1.1 — 2018-11-01

- Added screenshots for iPad Pro (3rd Gen)

### 2.1 — 2018-10-26

- Updated for iOS 11 and 12

### 2.0 — 2018-02-24

No release notes.

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## More apps by Jeff Weeks

- [Torus Games](https://appshunter.io/ios/app/torus-games/id471295451)
- [KaleidoPaint](https://appshunter.io/ios/app/kaleidopaint/id518275953)
- [4D Draw](https://appshunter.io/ios/app/4d-draw/id926050711)
- [4D Maze](https://appshunter.io/ios/app/4d-maze/id967998166)
- [KaleidoTile](https://appshunter.io/ios/app/kaleidotile/id1374849164)

All apps by Jeff Weeks: https://appshunter.io/developer/326104308

## Related topics

[hyspherical 2](https://appshunter.io/ios/topics/hyspherical-2)

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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 2026-06-01.*