I'll take a look around first. But if this is a hardware limitation and not a software limitation, then this may be what's preventing me from being able to install the individual game files. I don't know if there is much else I can do if the bundle I paid for only seems to offer the x86_64 files.
I did find an OS that runs aarch64 for the RaspberryPi 3. Do you think that might work? Does aarch64 have anything to do with running x86_64 files?