My wal-mart has 6 glass cases all approximately 6 to 8 feet wide. They also just reversed the Sony and the Nintendo section. Nintendo gets the first two cases closest to the main walkway. The next case is xbox (seems to be the more popular titles in this case) then there is a gap with two end caps and a walkway to cut into the next aisle (the end caps usually focus on old guitar hero versions that they can't get rid of and have on clearance I'm talking to you GH III and GH: Aerosmith) Then another xbox section (this one seems like it has mostly "family friendly titles")
The next section has PS2 and PSP divided almost equally then the last one has PS3 all but the the bottom row has an over flow of PSP and PS2.
Target is the one that has the worst videogame section, they have extended Wii into an entire wall, and cut xbox into the smallest section with Sony getting an entire wall divided between their 3 platforms.
