# 6D 61 69 6E 2E 62 73 — File format magic numbers

For 6D 61 69 6E 2E 62 73, offset is 0; extension is bs; format is main.bs, recorded from its source on 2026-08-03.

- **Hex signature:** 6D 61 69 6E 2E 62 73 _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0
- **Extension:** bs
- **Format:** main.bs

## What the source says

> main.bs | 0 | mgw | Nintendo <https://en.wikipedia.org/wiki/Game_&_Watch> Game & Watch image file

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).