Tubaruba (Amstrad CPC)

Developer message
On the .dsk dump, the author of the game hid a message at : Hi, my name is Tooba Zaidi and I wrote this program in 1985 during the summer holidays when  I was a  fifth  year at school. I hope that you enjoy this game as it took me three months to write. By the way, the secret code is 25 09 68 so dont forget it. And the famous DEC (HL) instruction that you're lookin' for aint there. P.S. I hope that this is NOT A PIRATE COPY ! or else ..