Simple can be pretty slick, or at least FRVR's puzzle game Untangle proves that you can be both. All you need to do in each nineteen levels is, as the title implies, click and drag the dots to untangle the lines onscreen so that none of them overlap. It's the sort of thing that's been done before, usually relegated to minigame status in larger titles, but Untangled's elegant, minimalistic presentation (not to mention melodic soundtrack) proves that it works just fine as a casual puzzle game on its own, albeit without any real bells and whistles to speak of. If you need more variety, Untangle's straightforward approach might lose its luster early on, though its snarled levels do get tricky early on. If what you're looking for is a mellow puzzle game that scratches that particular itch of "weirdly satisfying to tidy up, intensely frustrating to get there", Untangle's slew of knotted starry skeins is just what the doctor ordered. After all, how hard could it be... ?