Thanks to Károly Kiss for the source code, and for this great game written originally to Videoton TV Computer, now it has been ported to Enterprise
The game is EXOS compatible, and it runs on EP64 also, but it overwites system segment, so soft reset is not working.
Controls:
move snake: WASD ENTER, Int Joy space, and EXT Joy 1/2
F   -   Change to build Wall mode
L   -   Change to step mode
R   -   Rotate wall
ESC -   Exit game