As you might already know, the performance of SmileBASIC enables me to make 3D games. I recommend you to modify various codes. "Try and Error" must make you the expert of SmileBASIC. In "Rally 500" you should reload your own sprite data after original data distribution. Please try to insert the following code in line 204 of "Rally 500". LOAD"GRP4:(filename of sprite data you have saved)"