I like the idea.
But: What I really dislike is, that it's not very clear, at which point the ball will score. It looks like the ball will have to touch the paddle (as if it was attacking it) - but as far as I can now tell you already score before that.
Little design idea: maybe it could be closer to the original pong - or like a table tennis board.
This game would be way better, if you would get bigger bonuses for having more fighters (as if they were continents your holding). Cause otherwise always the one wins that doesn't fight at all.