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RomM

Beautiful, powerful, self-hosted rom manager and player

app

Alternative to: antstream arcade

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4.2.0-beta.1

2025-09-07

New Features

Console Mode

Look ma’, I’m on TV! The new console interface is designed for big screens and easy navigation with a controller or remote. It features a grid layout, large icons, and a simplified menu structure to enhance your gaming experience from the comfort of your couch. Launch it from the navigation bar or navigate directly to /console.

#2314

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Screenshot 2025-09-03 at 10 09 52 PM
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Screenshot 2025-09-03 at 10 08 08 PMScreenshot 2025-09-03 at 10 34 12 PM

Out-of-the-box PSP and DOS Emulation

Our programming wizard @adamantike cast a spell on the code base, and now PSP and DOS play is support out-of-the-box, no custom reverse proxy settings or browser launch arguments required! You’ll now see play buttons on supported games, though please note that performance is limited by the browser’s WASM engine, and performance will vary.

#2356 + #2376

Global EmulatorJS Config

The config.yml file now accepts a new emulatorjs section that allows you to set custom, per-core options and controls. Setting debug: true will print a list of available options for the current emulator core to the browser console, which you can then set in the settings block. The control block allows you to set a custom control mapping for each core. Both settings and control accept a default “core”, who’s value will be applied to all cores.

#2360

[!NOTE] Custom settings and controls are fully optional, and if not set, the emulator will use its own defaults.

# EmulatorJS per-core options
emulatorjs:
  debug: true # Available options will be logged to the browser console when the emulator is started
  cache_limit: null # Cache limit per ROM (in bytes, null is default)
  settings:
    parallel_n64: # Use the exact core name
      vsync: disable
    snes9x:
      snes9x_region: ntsc
    default: # These settings apply to all cores
      fps: show
  controls: # https://emulatorjs.org/docs4devs/control-mapping/
    snes9x:
      0: # Player 1
        0: # IF USED, A MAPPING FOR EACH BUTTON MUST BE SET!
          value: x # Mapping for keyboard
          value2: BUTTON_2 # Mapping for connected controller
        1:
          value: y
          value2: BUTTON_4
      1: # Player 2
      2: # Player 3
      3: # Player 4

Incremental RetroAchievements Sync

A new scheduled task has been added to sync RetroAchievements progress for all users on a recurring basis. Enable the task by setting ENABLE_SCHEDULED_RETROACHIEVEMENTS_PROGRESS_SYNC=true in your environment variables. By default the task runs nightly, but you can customize that using the SCHEDULED_RETROACHIEVEMENTS_PROGRESS_SYNC_CRON variable.

[!NOTE] Achievements will only sync for users who have enabled RetroAchievements in their profile settings

#2325

WebP Image Task

Another scheduled task has been added to convert all uploaded images to the modern .webp format. WebP images are 5-10x smaller then JPG/PNG images with no loss of quality, leading to faster load times for cover art in galleries. Enable the task by setting ENABLE_SCHEDULED_CONVERT_IMAGES_TO_WEBP=true in your environment variables. By default the task runs nightly, but you can customize that using the SCHEDULED_CONVERT_IMAGES_TO_WEBP_CRON variable. We also recommend increasing the TASK_TIMEOUT environment variable if you have a large number of games.

#2334

Minor Changes

Bug Fixes

Other

New Contributors

Full Changelog: https://github.com/rommapp/romm/compare/4.1.6…4.2.0-beta.1

Changelog on GitHub →