Space is a light, brief, blockade game where the last player who can move a runner wins.

There are ten blue pawns, ten yellow pawns and one green neutral pawn. Two blue runners and two yellow runners. The board is a 5 x 5 grid. Put all the pieces on the board in random positions. Blue removes one blue pawn and yellow removes one yellow pawn. These are the two spaces, unoccupied positions.

Players can only move pieces of their colour, while both players can move neutral. Pawns are moved to an orthogonally adjacent position, as long as it is unoccupied. Runners are moved as far as they want across a row or column as long as they land on an unoccupied position. A turn involves moving a pawn and a runner, in either order, and moving the pawn is optional. If you can't move your runner, you lose.
 

Construction notes:
The game doesn't have the smoothest setup. It would help to have uniform discs for all the pieces, with a design on the runners. Or cubes. Or is it still better to have more vertical runners? No, discs are best. I even know the symbol for the runners.
 

How good is this game?
Well I think it's the bees knees, whatever that means.
But a better question might be What is the role of this game?