Thank you! It works now on my SC-3000 if I use keyboard! but it would be easier with joystick.
I dont have flash cartridge, I burned the game to eprom 28C256 and that's probably the reason why it wont work on my SG-1000.
Tested with:
NTSC & PAL SC-3000
NTSC & PAL SC-3000H
NTSC SG-1000 & SG-1000 II