I never noticed how different the slopes are before seeing both at once. Blue max map is different between games but has an end. Zaxxon has finite length but is changed around between passes.
Blue Max case is entire game showing all possible terrain with only one intervening landing strip. Typically they are a lot longer.
1/16 scale attachment shows both together.
Independent full size on the ftp.
ftp://ftp:any@grandis.nu/~Uploads/cl...C64BlueMax.png
ftp://ftp:any@grandis.nu/~Uploads/cl.../C64Zaxxon.png