Yellow disk

Yellow disks are one of the color variants of the utility disks. They are essentially a remotely-activated bombs that can be triggered using a terminal. They can be pushed in all directions by Murphy. They are sensitive to hits. They chain-explode when consumed by explosion and preserve polarity. They are not rounded.

Yellow disks often appear in groups in tight passages resembling Sokoban puzzles. They usually need to be placed in specific spots to open new pathways when they explode.

Pushing

Yellow disks can be pushed Murphy in all four directions. This makes them very mobile and as long as there is enough space to push them.

Hitting

Yellow disk explodes instantly when hit by a falling infotron. Surprisingly they do not explode when hit by a zonk.

Yellow bridge

Yellow disks can be used as a bridge. With at least 2 yellow disks Murphy can transport zonks horizontally without distance limit.

3x4 yellow disk explosion

With proper timing it is possible to cause 1 yellow disk to explode twice, creating a 3x4 explosion. It happens when Murphy pushes a yellow disk into an empty tile that is about to be engulfed in an explosion cloud.

Yellow disk elevator

A yellow disk can be useful when Murphy is impeded by gravity. Murphy can stand on top of a yellow disk and push it down, to slowly descend downwards. This can allow Murphy to access areas that would not be possible to enter because of gravity, essentially using the yellow disk as a lift.