Ok, so this is my first Ludum Dare.
My idea so far:

The player, in a room has to pick up a ball that spawns in the centre and throw through the holes in each wall.

Ok… Whats the twist you say? Well. The walls are continuously moving towards the player until they throw the ball through any hole on said wall. Doing so will result in the wall being pushed back giving the player more time to continue. Behind one of the 4 walls (Chosen at random) there is a door to escape. The idea is that over time the walls will start increasing in speed, making for a true fast paced game of accuracy and keeping your nerve! – Photo’s to follow!

Tools:

Unity, Blender and Reason(Audio)