Blam!

From the Invisible City Productions website:

Looking for someone to shove? Strategize in Blam! with two to four elbow-room seekers.

Object: To push high-scoring pieces off the board and add them to your treasure chest.

You Need:

 A chessboard.
 One stash of Icehouse Pieces for each player. No stash may have the same color as another stash. 

On your turn, place a piece from your stash in a vacant space on the board. If there are any pieces in adjacent spaces (including diagonals), move them one space directly away from the piece you placed. You’ve just slammed a major impact onto the board, and it scattered nearby pieces. If a moving piece attempts to enter an occupied space, allow it to, and push the occupying piece into the space beyond; this may cause entire rows of pieces to move.

If a piece attempts to leave the board, place it in your treasure chest — unless it’s your color. If it’s your color, put it in your stash.

Once all pieces have been relocated, your turn ends. Play passes to the left.

The game ends when all stashes are empty or when all players agree to stop playing.

Winning: Each piece has a point value equal to the number of pips on it (1, 2, or 3). Tally the points in your treasure chest and your stash. If your score is the highest, you win.