Ah, Pipe Dream. With a random smattering of pipe pieces, the goal was to lay down pipes from one start point until you couldn't lay them down anymore. In Slipe, a tricky sliding puzzle from NTFusion, half of the work is done for you; all of the pipes are placed in the grid to start. However, now you've got to slide all those pipes around the board to connect pipes from one designated endpoint to another. Slide the pipes... Slipe. Geddit?
Each level of Slipe contains a square grid of tiles, which can be slid as whole rows or columns. Click and hold any tile to grab it, then drag either horizontally or vertically to shift the entire strip of tiles. Ultimately, you want to connect the two like-colored arrows outside the grid by sliding the tiles into place. You don't need to use all of the tiles in the grid to form your path, but you must use all tiles marked with a flower. Keep in mind, because you must slide entire rows, something as simple as swapping two tiles is a lot trickier than you'd expect, as a single movement carries so much change with it.
If you should be fortunate enough to knock out Slipe's 25 pre-fabricated levels, you might enjoy venturing into the Net Levels, created by other users and shared online. It appears that through a series of checks, all of the user-submitted levels are solvable, but as with any game that allows user levels to be uploaded, be aware of levels that might contain offensive names or images. Slipe is quite an easy game to pick up, but can make for quite the challenge if you don't watch where you're sliding.