Hi Just wanted to let you know that I added an ~amd64 to KEYWORDS to the subject ebuild and it compiles and installs fine on my amd64 based gentoo instalation (seems to automagically figure out using -m32 to compile an x86 binary on amd64). The game works great so far (even if there is nobody maintaining it right now). (I noticed the depends require openal/libsdl but for AMD64 they probably need emul-linux-x86-sdl which I happen to already have installed)
~amd64 added to the ebuild. Thanks