Version history

NEW DLC • Custom in-game experiences for Pokémon games, built by our team • Unlock event items, receive rare Pokémon, and more • Start an event from the Pause Menu while playing • First event available now for Pokémon Emerald! Custom Filters • New Experimental Feature for using custom game screen filters • Includes two presets for every system, such as CRT and original Game Boy • Import your own filters from the Files app IMPROVED • Dynamically updates “Audio” settings icon to reflect current volume level • Open files browser directly upon tapping "+" button • Change fast forward speed via per-game settings • Restored the “Choose” button when no Nintendo WFC server is selected • Updated larger devices to show three games on game selection screen • Renamed “Minor Settings” to “Lil’ Settings” • Updated the previous sync status screen for iOS 26 • Removed the redundant RetroAchievements heading from per-game settings • Limited the number of games shown in Recents • Updated the RetroAchievements description in per-game settings FIXED • Fixed fast forward and load state buttons disappearing when RetroAchievements are enabled • Fixed settings icons showing incorrect colors in light and dark mode • Fixed controller input picker appearing blue instead of purple on iOS 26 • Fixed animated controller skins missing buttons in skin selection screen • Fixed importing .md files for Sega Genesis games • Fixed screenshot notifications appearing behind the pause menu • Fixed online multiplayer help text appearing when a Nintendo WFC server is already selected • Fixed RetroAchievements achievement notifications sometimes not appearing • Fixed crash when resizing Pause Menu to very small sizes • Fixed not disabling hardcore mode for games • Fixed app hanging indefinitely when showing cheats

NEW Custom Fast Forward • Change the preferred Fast Forward speed per-system and per-game • Long-press the Fast Forward button from the Pause Menu to adjust speed Animated Controller Skins • Adds support for controller skins with animated buttons • New, official animated GBA skin by Caroline Moore Audio Settings • New audio settings to determine how Delta handles other apps' audio • "Mix with Other Audio" keeps your music or podcasts playing during games • "Pause Other Audio" silences everything else when a game starts Adjustable Screen Position • Long-press the game screen to adjust its position when a controller is connected IMPROVED • Graduated RetroAchievements from Experimental Features • Moved Online Multiplayer from Nintendo DS Core settings to top-level settings • Added option to move Home and Resume buttons to top of Pause Menu • Redesigned controller input mapping screen for game controllers and keyboards • Added the ability to delete save states in bulk • Automatically sync favorites between devices FIXED • Fixed error when loading RetroAchievements account information

NEW Redesigned Settings • Reorganizes settings into more easily navigable hierarchy • Icons help differentiate top-level settings • Access all settings options more quickly and intuitively Epilogue GB/SN Operator Support (thanks Epilogue!) • Connect game cartridges directly to your iPhone/iPad and play them natively • Reads and writes save files to cartridge • Supports GBC/GBA and SNES games (respectively) • Blowing into cartridges optional Cheats • Fully redesigned cheats screen for Liquid Glass • Choose icons from a wide selection for added personalization IMPROVED • Removed “Import from iTunes” game import option • Changed “Open Games in New Window” setting to be off by default FIXED • Fixed SNES audio crackling • Fixed NES games occasionally opening to a black screen

NEW Recents & Favorites • New "Recently Played" and "Favorites" pages in Game Library • See all your recent games in the order you last played them • Add games to "Favorites" via long-press for easy access Redesigned Pause Menu • Fully redesigned & animated pause menu with Liquid Glass on iOS 26 • Change Fast Forward speed per-game by long-pressing Fast Forward button RetroAchievements • View current game progress when launching game (e.g. number of unlocked achievements) • View full achievement descriptions by tapping "Achievement Unlocked" banners • Redesigned banners with more information & Liquid Glass design (iOS 26+) IMPROVED • Redesigned Game Library page control with icons (e.g. game systems) • Updated “What’s New” screen to showcase Delta 2.0 features FIXED • Fixed crash when enabling invalid Genesis cheats • Fixed incorrectly parsing some Genesis cheats • Fixed incorrect Settings navigation bar insets on iOS 18

NEW RetroAchievements (Experimental Feature) • Log in with RetroAchievements to track achievements • Supports Hardcore mode (Optional) • Supports NES, SNES, and N64 games IMPROVED • Added "Close" button to What's New screen • Changed "Respect Silent Mode" default to OFF • New "Follow Us" footer at bottom of Settings screen • Stays connected online up to 30 seconds when entering background FIXED • Fixed white screen after (un-)locking device while AirPlaying DS games • Fixed ignoring keyboard inputs for non-DS systems • Fixed not showing external game controller skin when returning from background • Fixed missing label for no chosen controller skin • Fixed not asking user to import BIOS before inserting GBA game • Fixed not disabling touch screen controller when game controller is connected

NEW “What's New” Screen • Lists new features in latest Delta update Controller Case Support • Adjust position of pause menu via controller skins • Allows using pause menu with cases such as Gamebaby and PlayCase • Supports vertical and horizontal insets IMPROVED Online Multiplayer • Fetches known WFC servers dynamically • Asks user to choose WFC server when first connecting online • “Reset WFC Configuration” button to reset WFC-related settings FIXED • Fixed using analog sticks as discrete inputs for controllers with poor calibration (Thanks Ian Clawson!) • Fixed not disabling active Fast Forward when connecting online • Fixed showing all save states as incompatible for non-DS systems • Fixed not showing Reset button when choosing per-game External Controller or AirPlay skins • Fixed crash when viewing save states for unsupported system • Fixed Hold Button description layout after orientation change

NEW Game Controller Skins • Choose skin to use when controller is connected • Customize system-wide or per-game Game Settings • New context-menu option to configure per-game settings • Disable OpenGL ES 3.0 for specific games (N64) IMPROVED Online Multiplayer (DS) • Simplified setup process that doesn't require configuring DNS • Choose from known WFC servers in Delta's settings • Provide custom DNS for other WFC servers Screenshots • Option always visible in pause menu • Take screenshots with game controllers or skins • Saves to new "Delta Screenshots" album FIXED • Fixed no audio for game previews in silent mode • Fixed no "Reset" button when choosing landscape skin

NEW • “Resume” button to easily resume games • Additional "Button Pack" icons designed by Louie Mantia IMPROVED • Added button to view Online Multiplayer instructions • Enable/disable Online Multiplayer via Experimental Features FIXED • Fixed incorrect default mapping for iPad GBC landscape skin

This beta fixes N64 games crashing on launch. PREVIOUS BETA Online Multiplayer • Play Nintendo DS games online with friends! • Connect via 3rd-party Nintendo WFC servers (e.g. Kaeru) Nintendo 64 • New OpenGL ES 3 renderer fixes many common graphical issues • Optionally switch back to OpenGL ES 2 via Experimental Features • Custom resolutions • Custom texture packs Misc. • Adds dark + tinted variants of primary app icon • Fixed misleading “file does not exist” Delta Sync error • [iPad] Fixed qutting all games when using multiple scenes

NEW Online Multiplayer • Play Nintendo DS games online with friends! • Connect via 3rd-party Nintendo WFC servers (e.g. Kaeru) Nintendo 64 • New OpenGL ES 3 renderer fixes many common graphical issues • Optionally switch back to OpenGL ES 2 via Experimental Features • Custom resolutions • Custom texture packs IMPROVED • Adds dark + tinted variants of primary app icon FIXED • Fixed misleading “file does not exist” Delta Sync error • [iPad] Fixed qutting all games when using multiple scenes

• Fixed not unlocking Experimental Features • Fixed misc. visual bugs on iOS 18

• Fixed occasionally dropping DS touch screen inputs • Fixed crash loading certain skins with fallback traits • Fixed crash loading certain iPhone skins on iPad • Fixed app freezing when AirPlaying • Fixed app freezing when rotating device with certain skins

NEW • Supports using iPhone skins on iPad • Updated app icon to new logo FIXED • Fixed rare crash when loading DS save states • Fixed game controllers not working on visionOS and macOS • Fixed hardware keyboard support on macOS • Fixed menu button not working on external controllers with remapped menu button • Fixed delayed inputs on external controllers with remapped menu button • Fixed DS touch screen not responding after updating to iPad version

NEW Handoff Support • Seamlessly switch between iPhone and iPad • Continues playing exactly where you left off • Supports Delta on Apple Silicon Macs via Mac App Store Save States • View all incompatible screenshots on a separate screen • Export save states to import into other emulators • Supports sorting by name Misc. • Supports Game Mode on iOS 18+ • "Open New Window" option by long-pressing "Main Menu"/"Close" on pause screen IMPROVED Quick Gestures • Added new gestures for Quick Save/Load • Quick Save = Double-tap • Quick Load = Long-press Controller Skins • Finalizes iPad controller skin designs • UI to choose different Split View/Stage Manager skins • Increased DS screen size for default edge-to-edge iPhone landscape skin Experimental Features • UI to choose AirPlay skins • "Skin Debugging" to toggle "debug mode" for skins FIXED iPad • Fixed not recognizing quick gestures on Split View controller • Fixed crash when pressing "Reset Controller Skin" button • Fixed crash opening N64 games in new window with context previews enabled • Fixed sometimes showing incorrect skin orientation in split view • Fixed loading wrong game after quitting game in another window • Fixed potential freeze when opening games in new window

⚠️ This update is incompatible with existing DS save states. Please save normally in-game before updating. NEW Multiple Windows • Supports multiple windows on iPad • Emulate games from multiple systems simultaneously • Open new windows via drag & drop, or by long-pressing game then choosing "Open in New Window" • Automatically pause games when switching windows (optional) Updated melonDS core to 0.9.5 • Improves game compatibility & performance • BIOS files are now optional! • Supports "inserting" GBA games into DS dual-slot • Increased fast forward speed to 3x (A15 processor or later) “Support External Displays” Setting • Control whether Delta shows games full screen on external displays • Disable to use multiple windows on external display with Stage Manager FIXED • Fixed clipped context menu preview for games • Fixed exporting save file without file extension • Fixed interface rotating when playing WarioWare: Twisted! • [iPad] Fixed not adjusting DS screens for split view keyboard • [iPad] Fixed hidden save state thumbnails when in compact size class

Quick Gestures • Hold menu button to perform actions via gestures • Fast Forward: Swipe left or right • Hold Button: Tap buttons to hold/release

• Fixed issue where Delta could accidentally overwrite local data with old remote data • Fixed incorrectly marking some game saves as conflicted during initial sync • Fixed accidentally signing-out after signing-in to previous Google Drive account

IMPROVED Delta Sync • Added detailed logging to help debug issues • View complete error log via "Export Error Log" option in Settings Misc. • Shows AirPlay icon when AirPlaying • Added "Learn More" links to FAQ thoughout app FIXED iPad • Fixed crash when changing DS emulator core • Fixed incorrectly indented rows on MelonDS core settings screen • Fixed not rounding last visible row in MelonDS core settings

⚠️ This beta fixes a critical bug that could cause corrupted save files and save states to be uploaded to Google Drive/Dropbox. Please update ASAP to ensure you don't lose any data. You can read more about this bug fix in today's Patreon post.

IMPROVED Delta Sync • Automatically resolves cheat + controller skin sync conflicts • Syncs game save hash between devices to prevent redundant uploads • Displays activity indicator when signing in • Delays seeding sync database until initial sync • Uses local modification date when uploading changes • Signs out from previous service when switching services • Improved error message when remote storage is out of free space (Dropbox only) Settings • Revised UI to use modern "inset grouped" style • Uses large titles where appropriate Misc. • Replaces `UIDocumentBrowserViewController` with `UIDocumentPickerViewController` on iOS 17+ • Skips checksum verification when importing zipped games FIXED Delta Sync • Fixed incorrect mass conflicts when signing out then back in • Fixed “Harmony.sqlite couldn’t be opened” sync error when there are more than 1000 games • Fixed “file does not exist” sync error after restoring previous version • Fixed Delta Sync switch remaining OFF if users cancels "Disable Syncing?" warning alert • Fixed missing references to remote files when signing out then back in • Fixed queued syncs sometimes fetching outdated changes • Fixed accidentally using wrong account when signed-in to multiple services iPad • Fixed crash when resolving Delta Sync merge conflicts • Fixed crash when disabling Delta Sync or switching services Experimental Features • Fixed saving screenshots to Photos with .limited authorization • Fixed saving screenshots to Photos as JPEGs Misc. • Fixed accidentally deleting Games directory during sync in rare circumstances • Fixed crash loading save states on iOS 17 • Fixed displaying system name in dark text when remapping inputs on iOS 17

NEW AirPlay Support • Stream your games to the big screen with AirPlay • [DS] Optionally AirPlay just top screen for true multi-screen experience Experimental Features • New section in Settings for features by third-party contributors • Features are WIP and should be used at user’s discretion Initial Experimental Features • Show Status Bar: View time/WiFi/battery while playing a game (@LitRitt) • Game Screenshots: Take screenshots from pause menu (@LitRitt) • In-Game Notifications: Show pop-up alerts when performing certain actions (@LitRitt) • AirPlay Skins: Customize appearance of games on TV when AirPlaying • Variable Fast Forward: Change the Fast Forward speed per-system FIXED • Fixed translucent controller skins resetting opacity after rotating device • Fixed incorrect thumbstick size after rotating device

Local Multiplayer (thanks Ian Clawson @ThatClawsonBoy!) • Play NES, SNES, N64, and Genesis games with friends • Supports up to 4 players Improved Non-MFi Controller Support • New default mappings for single Joy-Cons and Switch NES/SNES controllers • Uses Logo/Home button as Delta pause button if possible

"Contributors" screen • See everyone who has contributed to Delta • View associated Pull Requests for contributed features PREVIOUS BETA • “Respect Silent Mode” setting • Automatically mutes game audio if another app is playing audio • Browse CheatBase for all known cheats for games (thanks Noah Keck @horn978)