I've noticed that the ebuild for einstein-2.0 doesn't install an icon. It does install a .desktop file in which an icon is defined 'einstein.png'. Looking inside the source file I see that the icon is not included in there. I tried to let the developers know about it by writing them a feedback note on their website. However, I was able to get an icon from the windows version of the game. I'll attach the icon in png format to this bug. The ebuild could be modified to install this icon until the game developers fix the issue. Oh and I've been playing this game on an amd64 machine for quite some time now and it's been working fine with no issues at all. Maybe it could be marked amd64 stable.
Created attachment 91743 [details] einstein-2.0 icon Here's the icon extracted from the windows version
*** Bug 140426 has been marked as a duplicate of this bug. ***
Added icon to CVS... thanks for the bug report. =]