After the game has loaded, you must select a question block to load. Press any
key from 1 to 5 to select a block. The screen corrupts while the block is
loading, but do not worry about this.

After the block has loaded, you must then select whether you want to play a one-
player or a two-player game. There is a bug here, because you cannot see which
of the two options you have selected. To select a one-player game, press SPACE
or the Fire button on the joystick. To select a two-player game, press A (on a
QWERTY keyboard) or move the joystick down, then press SPACE or the Fire button
on the joystick.