> For the complete documentation index, see [llms.txt](https://8bitmods.gitbook.io/manuals/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://8bitmods.gitbook.io/manuals/gameid/overview.md).

# How GameID works

GameID lets the device recognise which game is running and mount that game's own virtual memory card automatically. Each game gets a folder named after its ID, for example `SLUS-20946`, created the first time the game is seen.

## What happens when a game is detected

1. The loader or console tells the device the game ID.
2. If GameID is enabled for the current mode, the device mounts the card named after the ID, channel 1, creating it if needed.
3. The display shows the game's title from the built-in database, and the ID in the bottom left corner.
4. If the game is a PS1 title and the device is in PS2 mode, it switches to PS1 mode.
5. When the ID is empty, for example when returning to the loader, the device mounts the boot card.

## Where the ID comes from

| Console | Source                                                                                  | Page                                 |
| ------- | --------------------------------------------------------------------------------------- | ------------------------------------ |
| PS1     | Optical drive emulators, Unirom, FreePSXBoot, tonyhax, modified BIOS                    | [PS1 GameID](/manuals/gameid/ps1.md) |
| PS2     | MMCE-aware loaders (OPL, Neutrino), or the PS2's own launch history on the mounted card | [PS2 GameID](/manuals/gameid/ps2.md) |

## Turning it off

GameID is on by default for both modes. Disable **Enable GameID** for PS1 or PS2 under **Settings** to keep the current card mounted regardless of what is running.


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