There was a new physics-based match-three title released on Steam. It's called Chains, and it's great, simple fun. Multi-colored balls cascade down into a variety of playing fields, and your job is to clear them by chaining together at least three of the same color that are close together. The controls couldn't be simpler: just click on a ball and drag through your chain, clicking again to remove the series. Chains is governed by the laws of physics, so clearing combos causes everything above to tumble down realistically.