It's pretty difficult to imagine a game which epitomises the notion of interactive art quite so literally as Jezzamon's Mondrianism, because it actually is interacting with a famous piece of art. And what better artist to pick for Ludum Dare's Minimalist theme than Piet Mondrian, one of the most important figures of the minimalist art movement.
In Mondrianism, you'll be able to take control of his paintings and mess with them until you remove all the colours from them. The colours are trapped in rectangles in the paintings, and you can only move one colour per level (you do so with your mouse). Different coloured rectangles move in different directions – vertically, horizontally or diagonally. You have to move your rectangle until it reaches a different coloured one and absorbs it, at which point your rectangle changes colour, making the game much less monotonous and much more challenging. The catch is that you can't absorb rectangles of your own colour, so you could find yourself stuck on a level with a bunch of blues, having eliminated all reds and yellows, and then the only thing to do is sigh and press [R] to restart.
This game is as simple as they come, but it's insanely addictive, exactly because it looks so clean and straightforward. Whether you like Mondrian or not, his style fits the game so perfectly that it seems incredible that no one thought of putting the two together a long time ago. And therein lies the genius of Mondrianism: it took celebrated, cult art and wasn't afraid to transform it into something new and innovative once again after all these years.