With MSX-BASIC, you can do so many things ! Here’s Cubit, a 3D Power 4, published in 1986 by Mr. Micro on tape format. Contrary to the appearances (binary files and unknown formats), this game is almost entirely in BASIC, you need only to know the way to get the real files !
The game is provided in DSK version, with the source code. I’ve merged the two original BASIC listings and fixed a little display bug.Cubit (DSK) (88)