1. If the game is downloaded, it is probably pre-installed. Don't use an install executable, look for a game executable.
2. If you have the disk contents in an HDD directory, mounting this directory as A: as well should work, except when the installation wants to create files of a same name. -> Mount an empty directory as C: and the directory of the install files as A:.
3. If that doesn't work, try mounting A: with parameter -t floppy. Not very likely that this is the problem, though.
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