Through the wall.

Move as a cat ghost. Fly to the cloud, then tap the glowing border three times.

Resume first. W A S D moves across the ground. Up and down arrows fly. Left and right arrows also move sideways. Hold the buttons to move or fly. Near the cloud, press E or tap the glowing border. Focus a move or fly button and hold Space or Enter. Space pauses. Start again returns here, paused.

The ghost colors, wall, cloud, border, movement and controls are proposals for Natalie. This sample stops when the border opens. Space comes next.