It is a version written in assembler for the Psion Series-3a pocket computer, in 1995. His true name is 3a-Hexxagon, and his author is Marco Aicardi, an Italian who also made a 3a-Tetris.
10 $ shareware.
Board with 5 hexagons per edge, with 3 blocks. Black and white, of course. 4 levels.
I never thought I could write a such sophisticated game
