# 1D — A Game in One Dimension > A simple yet complex one-dimensional pulse-canceling game with multiple modes. (iPhone/iPad app by Eric Smith.) - Source: https://appshunter.io/ios/app/1d/id426027412 (this page in markdown: same URL + `.md`) - Developer: [Eric Smith](https://appshunter.io/developer/415133551) - Category: Games, Entertainment, Action, Casual - Price: Free - Rating: 5.00/5 from 2 App Store ratings · 13 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 2 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, European Spanish - Released: 2011-04-01 - Data updated: 2026-06-11 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/1d/id426027412/reviews.md ## What is 1D? In 1D (One Dimension, like 2D and 3D) pulses are coming from each side in a one-dimensional world and it is up to you to cancel them out as you move back and forth. When the avatar is black it can cancel blue pulses and when it is green it can cancel red pulses. With using only one dimension, and two buttons, 1D is a simple and fun game, which is also surprisingly complex. ***** - “This game is surprisingly fun. I will have to say that this game could have given pong a run for it’s money.” -Dan Staley Features ========================== ● Simple controls ● 3 different game modes with movie based tutorials ● Great if you have a just a minute or full hour to play ● High score tracking for each game mode ● Quick startup time ## Key features - One-dimensional gameplay - Pulse canceling mechanics - Color-matching avatar - Multiple game modes - Movie-based tutorials - High score tracking - Quick startup ## Recent user reviews (10 of 13) All indexed reviews: https://appshunter.io/ios/app/1d/id426027412/reviews.md ### 5/5 — Amazing!!! *2014-04-18, version 1.5* This is a beautifully simple and fun game :D ### 1/5 — Idiots *2013-01-07, version 1.3* Nothing to do with 1D and star.c is lying so people will get the app and she is not a true directioner if you were you would like them ALL equally like ME ### 1/5 — 1D *2012-06-05, version 1.2* Nothing to do w/ one direction 😡😔 ### 1/5 — 1D?! *2012-06-02, version 1.2* Where is the one direction part?! Hate it!!!! Nothing to do with 1D!  ### 1/5 — 1D *2012-04-22, version 1.2* This is not One Direction!!!!!!! ### 4/5 — 👍🌟✨✨Love u 1D!✨✨🌟👍 by Star.C *2012-04-17, version 1.2* ✨🌟✨Good Game 1D🌟✨🌟This Game totally worth it!👍❤Love u LIAM! ### 4/5 — Different *2011-04-02, version 1.0.1* The hardest part is finding out what you are doing but once that's done it's fun. The best mode of the game is the puzzle mode because of no limit on time. You should install instructions into the app. ### 2/5 — Could use improvement *2011-04-02, version 1.0.1* Seems like it could be a fun game with a good concept, but there needs to be some sort of instruction page so people know what they're supposed to do and how to do it. A more intuitive user interface (label the buttons, resize elements, etc.) and retina support would be nice. The load time is great though. ### 5/5 — Perfect *2011-04-02* An example of the raw basic elements needed to make a game. A game meant for the iPhone. That being said it is laking in the whole "why should this game be on the iPhone" department. With very simple controls of left, right, and neither; I wonder why the game didn't use the accelerometer for controlling the character. ### 5/5 — Idk *2011-04-02, version 1.0.1* I have no clue because I don't know what you are supposed to do!!!! ## Frequently asked questions about 1D ### What is 1D? 1D is a game set in a one-dimensional world where players must cancel incoming pulses by switching their avatar's color. It features simple controls and multiple game modes. ### Does 1D have ads? No, 1D is ad-free, allowing for an uninterrupted gaming experience. ### What are the game modes in 1D? 1D offers 3 different game modes, each accompanied by movie-based tutorials to help players understand the gameplay. ### Can I play 1D offline? The provided information does not specify offline play capabilities for 1D. However, its simple mechanics suggest it may function without an internet connection. ### How often is 1D updated? 1D was last updated on January 1, 2019. The current version is 1.5.3. ### What devices support 1D? 1D is supported on iPhone and iPod devices. ### What is the age rating for 1D? 1D has an age rating of 4+, making it suitable for younger players. ### Does 1D track high scores? Yes, 1D features high score tracking for each of its game modes, encouraging replayability and competition. ## Version history (last 5 releases) ### 1.5.3 — 2019-01-01 - Added support for the iPhone X family of devices - Bug fixes ### 1.5.2 — 2016-02-01 ● Added support for the larger screens on the iPhone 6 and 6 plus ### 1.5.1 — 2014-05-01 - Fixed the issue with the status bar on iOS7 - The application now requires a minimum of iOS 7.0 ### 1.5 — 2013-11-01 ● 5 new achievements ● Bug fixes ### 1.4 — 2013-04-01 ● Game center friend scores now appear in the leaderboard during game play ● 5 new achievements ● Bug fixes ## Apps similar to 1D | App | Rating | Price | Category | | --- | --- | --- | --- | | [BloomPixel](https://appshunter.io/ios/app/bloompixel/id1454054624) | 1.0 (1) | Free | Games | | [1D Arcade](https://appshunter.io/ios/app/1d-arcade/id638871602) | 5.0 (2) | Free | Games | | [Tematris](https://appshunter.io/ios/app/tematris/id1626295653) | — | Free | Games | | [Barrel River](https://appshunter.io/ios/app/barrel-river/id823934893) | 5.0 (1) | Free | Games | | [Wiggly Loaf](https://appshunter.io/ios/app/wiggly-loaf/id1447456825) | 4.3 (9) | Free | Games | | [きらっとばんばん](https://appshunter.io/ios/app/id6443460803) | — | Free | Games | ## More apps by Eric Smith - [CalAdvent](https://appshunter.io/ios/app/caladvent/id1439383338) - [CalAdvent Plus](https://appshunter.io/ios/app/caladvent-plus/id1439383410) All apps by Eric Smith: https://appshunter.io/developer/415133551 --- *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 2026-06-11.*