First I selected 15+ because I considered my first sim game that I really engaged in and acheived somethin in to be Richard Burns Rally. I have tried some other sims before that, but couldn't get into track racing. BUT then I remembered one sim that has no analogs till now and it is Screamer 4x4, only good memories about that, also I remember I found it in a demo cd was really fascinated about all the simish apsects like, realistic colours and environement, not over the top car design and ability turn on and turn of things in the car... hm yeah, that was so cool