Quell: Memento

In Quell: Memento the player must traverse a small maze with a blue orb. In each move, the player flicks the orb in one of the four basic directions, and the orb will not stop until it hits an obstacle -- you cannot change directions during its movement. The goal of the game varies a lot: in earlier levels, you have to collect pearls scattered around the maze; later, you might have to light tiles by passing next to them, avoid spikes, or illuminate targets using beam-emitting orbs. Later levels ...