Does LCD Density changer app for Android works with games?

Hi guys, I'm thinking of getting Sony Ericsson Xperia Neo. It has the 480x800 resolution. But there are more 2D games for 320x480 screen. I would like to play them also. But, they won't show in fullscreen on Xperia Neo. So, I was wondering, if LCD Density changer will work to show the game in full screen?