It's hard to escape from Line Riders 2: Unbound's grip once it seizes hold of you. This simple puzzle game packs a surprising amount of depth, making hours fly by as you desperately try to pass a tricky course or baffle your friends with a crazy concoction of your own. The PC version is slightly better than its DS counterpart because the latter suffers from control quirks, but the experiences are largely the same. It's a shame most puzzles rely on sheer perseverance instead of skillful line placement, though, and the learning curve is far too steep in the early stages. If you have the patience to learn the subtleties of sled-track design, there is a lot of value in this little package.