AntiMultiface
From CPCWiki - THE Amstrad CPC encyclopedia!
Anti-Multiface, aka Multimag, was a PD utility written by "Merlin J. Bond of Magic Software", better known as Serge Querne or Longshot of Logon System.
It enabled you to run Multiface-saved games without a Multiface. A 128k machine was required, and it would only load the first 64k of the Multiface snapshot.