The game Slider is the addictive and challenging puzzle of sliding blocks. The object of the game is to rearrange the blocks around the game board and slide the key game piece off the screen. Enjoy 100 levels of puzzles which become progressively more difficult as you advance. If at any point you become stuck on a specific level and want to continue on just select which level you want and be taken directly there. Slider costs $0.99 USD on Windows Mobile Marketplace and unfortunately there is no trial available.