1 = FIRST
2 = WARPDRIVE
3 = GRAVITY
4 = ICEWORLD
5 = LASERBEAM
6 = VOLCANO
7 = LAVADOME
8 = THUNDER
9 = METEORS
10 = STARSHIP
11 = WASTELAND
12 = SANDSTORM
13 = CARAVAN
14 = REBIRTH
15 = OASIS