Mixup | Local ROM setup

01 / SELECT

Add your local ROMs

LOCAL ONLY

Identity details and diagnostic view Every selected file is hashed once and matched against all three games. This selector changes only the table and report shown below.

Choose individual files One cartridge image or multiple extracted MAME members Choose a folder Compatible fallback for browsers without saved folder access

Drop files or folders here Folder dropping works in browsers that expose directory entries. Otherwise use Choose a folder above.

Privacy: ROM bytes are read only for local validation and are not uploaded, logged, placed in URLs, cached by the service worker, or saved in IndexedDB. Where supported, only the folder handle is saved. The browser can revoke it at any time.

02 / VERIFY

Exact accepted identities

03 / DIAGNOSE

Local checksum report

Ready for local validation. No files have been read.

Choose files or a folder to calculate local checksums.

04 / MIXUP LAUNCHER

Choose the world to play

Game cards stay locked until that game's exact local identity set validates. The primary game supplies the world being played. Secondary games will later supply characters or a character roster, but cross-game combination is future functionality and is not faked here.

Primary worldNone selected

Secondary charactersFuture Mixup functionality

05 / BOOT

Launch a validated local game

Select an unlocked primary world. Batman, Gradius, and DaiOuJou boot directly from validated local input with no captures, seeds, generated cartridge tables, or game-data requests.