Cronus is an interesting puzzle game for your Windows Phone that is available for both Windows Phone 7.x and 8 devices. The game puts you in a time travel machine and shoots you back in time to prevent some of history's most notable disasters such as Chernobyl or the Exxon Valdez oil spill. You are tasked with establishing a safe flow of hazardous materials to prevent the calamity from happening. And you have to do it all under the clock.
Add a multiplayer mode, upgradable skills, a knowledge data base on the disasters you are trying to prevent, challenging game play and Cronus isn't too shabby of a Windows Phone game. It can get a little busy with the story panels but you do have the option to skip the dialog and jump right into game play but overall, if you like puzzle games Cronus is worth a try.