Certain file operations are unsupported in HTML5 builds.

[ImmutableOctet]

Some more-crucial features like records and game progression aren't able to be saved/loaded using vanilla Mojo.

HTML5, even as the least 'native' target I'm supporting, should still provide the basic features available from the other targets.

Although some issues could be circumvented using 'SaveState' and 'LoadState', better solutions are available here.

HTML5 is one of the targets where this can definitely be fixed; specifically, by using 'regal.virtualos' as the underlying file-system.