Collider is a physics-based Time Waster

Try as I might, I just can't get away from the physics games. There's something so compelling about applying real-world movement to a game, even if sometimes the physics are only approximations of reality.

Collider, the game I'm into currently, does a fairly good job of approximating balls rolling down ramps and chutes, and otherwise reacting to gravity. There are three types of balls in Collider: positively charged balls, negatively charged balls, and neutral balls. The goal of the game is to get all of the positive and negative balls to touch, causing them to explode and disappear.

Complicating matters is that when two similarly-charged balls touch, they combine into a larger ball. Conversely, if a large positive ball touches a smaller negative one, the negative ball disappears, and the larger positive ball shrinks proportionally.

Your only control in Collider is to place the balls on the playing board, but you are limited by the "radiation line", which is at different heights on different levels. Once you choose positions for all of the balls (and you have to place all of them), you can press the Play button and watch the level unfold.

The first few are easy, but the difficulty ramps up fairly quickly. Luckily (for some), solutions are available for any level if you get stuck - just click the I button on at the top-left of the window, and amongst the options is a Show Solution link.

Tags: balls, chutes, collider, gravity, physics games, physics-games, PhysicsGames, show solution, show-solution, ShowSolution, timewasters