Ron has released a Dreamcast implemenation of Pentago. Below is a roughly translated version of his release notes.

Pentago is an abstract strategy game created by Tomas Flodén and marketed by a Swedish company, called Mindtwister.

Pentago is played on a 6×6 board divided into four parts of 3×3. Each player, in turn, should put one of its chips in an empty box and then turn 90 degrees one of the quadrants.

He earns the player who manages to align five of its chips (diagonally or vertically or horizontally), whether he succeeds before or after the rotation.

If you manage to occupy the entire board without having achieved the goal, the game is on tables. It handles with PAD. Experimentally works in FULL PAL resolution to 768 * 572 pixels.

Download here.

Source: dreamcast.es