There's a reason this seemingly cloned version of Blokus exists - it's so much harder! The rules of the game follow exactly from the original, but try figuring out the best formula for your insane triangular pieces... I love it. It's perfect with three players, obviously, as Blokus and Blokus Duo are perfect for 4 and 2, respectively.
Changing Blokus to a triangular grid doesn't sound like much of a change, but it adds an extra dimension in allowing corner-to-edge play as well as corner-to-corner. This makes it harder to restrict one targetted player, making the whole experience much more subtle. The perfect abstract for four.
Playing with pieces made of triangel instead of squares actually makes a much bigger difference to the game than I expected. Spotting moves is somehow more difficult with triangles, which leads to more challenging and varied gameplay. Also, it plays perfectly balanced with 3 players.