Magnetic Duo is a concept for a local-multiplayer puzzle game.
In this game one player can pull blocks, and make them larger/smaller in size,
while the other player can push blocks, and turn them around.
The game will not have over complicated or “fast reaction” type of levels, as the game is made to be played by less experienced gamers.
The target audience for this game is couples in which one or both players are less experienced gamers and children with their parents.
I believe the first is a gap in the market which is not yet saturated.
With these simple mechanics, you can make countless of puzzle levels!