This game (previously known as same-gnome) was excluded from the gnome-games packages back in version 2.30.1 with a one-line motivation
Disable swell-foop and lightsoff for now, the GI stuff is not ready
and it has never come back. A package swell-foop does exist in Sid, with apparently no open bugs.
markokn
from Wien, Österreich
Obviously swell-foop will be included in the upcoming package gnome-games 3.4. It is not included in the current package gnome-games 3.2.
Gnome-games 3.4 is not in testing yet because it has some issues/missing dependencies. You can find some detailed explanation here: http://bjorn.haxx.se/debian/testing.pl?package=swell-foop
Swell-foop and GNOME 3.4 are now both part of Wheezy (currently testing), so it seems your information was correct.
Still, I’m wondering what had blocked it for months. Oh well, never mind!