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Mobile video game console emulator From Wikipedia, the free encyclopedia
Delta is a video game console emulator created by Riley Testut for iOS and iPadOS. It supports games for the Super Nintendo Entertainment System, Nintendo Entertainment System, Nintendo 64, Nintendo DS, Game Boy, Game Boy Color,and Game Boy Advance. A paid version of the emulator also supports Sega Genesis games. Development of Delta started prior to Testut entering university, with it being a successor to the earlier GBA4iOS application. Prior to the application's release on the App Store, iOS users had to download Delta via AltStore, Testut's app store for the iOS and iPadOS operating systems. Upon release onto the App Store in April 2024, the app reached the top of the App Store rankings for several days.
Original author(s) | Riley Testut |
---|---|
Developer(s) | Riley Testut et al. |
Initial release | September 28, 2019 (AltStore)[1] April 17, 2024 (App Store)[2][3] |
Repository | github |
Written in | Swift |
Operating system | iOS iPadOS |
Platform | iPhone iPad |
Predecessor | GBA4iOS |
Type | Video game console emulator |
License | GNU Affero General Public License 3.0 |
Website | deltaemulator |
Riley Testut started developing GBA4iOS, the predecessor of Delta, during his senior year at Richardson High School along with his friend Paul Thorsen.[4][5] It was a emulator of the Game Boy Advance for the iPhone. iOS users had to sideload the emulator via a loophole called the "Date Trick", where the app is allowed to be downloaded and installed via the Safari browser, without needing to jailbreak (i.e. using exploits to bypass software restrictions) the device.[6] The exploit was patched in the iOS 8.1 update, thus ending the lifespan of the software. The source code for the app is currently hosted on Bitbucket.[7][6]
Development of Delta started prior to Testut entering the University of Southern California.[8] He released the emulator in 2019 alongside the AltStore app marketplace for iOS and iPadOS.[9] Testut claimed that he developed the application because he wanted to publish the emulator.[8] AltStore serves as an alternative to jailbreaking.[3]
Before Delta was released on Apple's App Store in 2024, the only way to install it was through AltStore.[2] Apple did not allow software emulators in their App Store. In 2024, due to pressure from the EU Digital Markets Act, Apple changed their rules to allow emulators.[10] After the change, a copycat emulator called iGBA (a fork of GBA4iOS) was released to the App Store. Apple took down iGBA shortly after it was released.[11] Testut described iGBA as a "knock-off" of the Delta emulator. He also stated that he had not given permission to the developer of iGBA to publish the application.[12]
Delta released on the App Store on April 17, 2024. It reached the top of the digital marketplace's charts.[13][3] The emulator changed its logo after Adobe threatened Testut with legal action due to its original logo sharing an almost identical similarity.[14]
Delta can emulate the consoles listed below:[15][16][2][17]
Console | Emulator used |
---|---|
Nintendo Entertainment System | Nestopia |
Super Nintendo Entertainment System | Snes9x |
Nintendo 64 | Mupen64Plus |
Game Boy / Color | Gambatte |
Game Boy Advance | VisualBoyAdvance |
Nintendo DS | MelonDS |
Sega Genesis | Genesis Plus GX |
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