The moving walls, especially in the level pack "Into the Unknown" literally sends you into the unknown. Ive so much as touched the moving walls and my ball just vanishes. Other glitches involving the moving walls includes being thrown violently across the map and appearing on other various points on the map. Please fix this.
More pieces are needed in the level editor. Triangular blocks are a must, and the ability to change the size and power of the bumpers would be a nice feature. Also, why is there a limit on the length of the lasers? I know that the ball should always be able to fit between the two conductors, but I think the lasers should be able to be a bit shorter. The limits for how many lasers you can put in a level seems unnecessary. Either make the limits substantially larger, or remove them. Being able to link the ends of the lasers would be very handy and would reduce a cluttered looking level if lots of lasers are in use (overlapping). Make options for buttons like opening a door and only keeping the door open if a ball remains on the button. Also having buttons that must be pressed simultaneously in order to open doors and having buttons that must be pressed simultaneously, and remain pressed to keep doors open would be awesome. This would "open doors" (see what I did there? :D) for multi ball levels.
Overall, its a very fun, smooth and polished game, and definitely one of my favorites. Five stars if the glitches are fixed.
911Yoshi about Labyrinth 2, v1.3.1