Jezzy

Tap the field and a wall grows from there in two halves. A half that reaches solid ground stays; a ball that touches a half while it is still growing breaks it and costs a life. Every part of the field without a ball in it is claimed. Claim 75% to clear the level, 80% later on. Right-click, Space or the turn button switches between across and down; P pauses. Eight levels, each in a 90s colour scheme, with hearts and clocks to claim, fast balls and slower walls on the way.