Please check the game if you find any problem, please report to me, if everything is fine, I will pack it as final version.
2 colours were modified:1 red became darker, 1 green brighter
The program loads under EXOS 2.0 also, originally it did not loaded, because SWAP overwrites character memory of EXOS, but it used always EXOS 2.1 address.
It can be loaded on any expanded machine F8-FB segments are not required anymore.
The program still uses all video RAM, and 1000h bytes (plus EXOS character memory) from FF segment, if EXOS boundary >1000h then the program works as the original, if EXOS boundary >0800h then 2nd demo part is skipped, if EXOS Boundary < 800h then 2nd part is skipped, and loading screen also.