games-kids/lletters-0.1.95-r1 works on amd64, with this patch. This is patched against an ebuild already patched for bug 43762.
Created attachment 26871 [details, diff] amd64 support patch
the ebuild causes an access violation of the sandbox... Will figure it out tonight.
The access violation is bug 43762, which isn't unique to amd64. There's a patch for it on that bug report.
In CVS