Powerhouse
Powerhouse is an Icehouse game designed by Andrew Looney. It is currently unpublished.
Powerhouse uses 3 Treehouse sets, 3 tokens, and a drawstring bag. Powerhouse is a minimal-game-surface abstract strategy game for 2 to 4 players.
Powerhouse is also known by the code name Secret Project PH-10.
The rules for Powerhouse will hopefully be released in some format soon, but I cannot say when.