games-board/xskat is my favourite package and it works fine on arm64
On a side-note, this made me have a closer look at the package and noticed it has a normal Makefile on top of the imake one, given imake is terrible and we'll probably want to remove it eventually I switched to the Makefile in 4.0-r2. Hopefully haven't overlooked anything needed imake might have been doing, please drop a note if anything off.
=games-board/xskat-4.0-r2 works for me
arm64 done all arches done