Here is a game where you fly over a forest.....
Or its the overall technique, mixing it up with brown (and even some grey directly on the trees, just saw that).
Sorry for still bothering, but I wanted to show you that.
About the Highscore table: People mainly use .D64 I think, At least I only use .D64 if its available. I dont know why people might want to use the other variations. CRT (cartridge) maybe, because it loads faster?
Saveable highscores are always appreciated by most people I guess.
At least people using .prg or .crt cannot complain about a non saved highscore then. =D