And you could not ever be able to find one. The reason is that when someone develops a full screen game for series 40, he uses the Nokia UI API and "writes" directly pixels on screen canvas (Java Class) which its size is 128x128. When you run a series 40 game on a series 60 phone, the canvas size is 176x208 but the java code writes only the canvas section of 128x128 pixels starting from the upper left corner of screen. This is the reason that you don't see the game in full screen. The same is happening when you play a series 30 game in a series 40 phone...
gpalouk.