A strange little side quest
The mechanics around 3D Cannon Ball have roots that stretch far beyond modern browsers. The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. The broader history adds one more wrinkle. A major archery competition held at Finsbury in England in 1583 drew about 3,000 participants. That gives 3D Cannon Ball a little more company than it first appears to have.