As in capture a small game (with no multiload) in memory and write it as an executable file.
I know it can be done on the C64 at least with an Action Replay, as shown in
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I'm going to presume one or more of the Amiga Action Replays can do this, but I wouldn't know the commands. I just hope there's something that's at least compatible with all Amigas that would allow a snapshot to run on any Kickstart.