Ice Slide — free browser game

Ice Slide is not a plain maze: your skater can't stop on the ice. When you choose a direction (arrow keys, WASD, the on-screen direction buttons on mobile, or a finger swipe on the canvas) you slide that way and only stop in the square right before a wall or the edge of the field — so on every move you have to work out in advance where you'll come to rest. Your goal is to glide over and collect all the blue crystals on the field while sliding, then reach the exit. The exit ring stays grey and inactive until you've collected every crystal; once you grab the last one it turns green and activates, and sliding over it completes the level. If you pass over the exit before the crystals are collected nothing happens and you keep sliding. If you make a wrong slide, undo your last move with Z; if you get stuck, restart the level with R. Your fewest-moves record is saved for each level; trying to finish the same stage on a shorter route is an extra challenge. Tip: to reach a crystal you usually can't aim for it directly — instead you have to line up the right approach using a wall that will stop your slide; plan your route in your head from wall to wall.