drop4(6) Games Manual drop4(6)

drop4the game of drop4

drop4 [level]

drop4 is a tetromino packing game. The object is to fit the shapes together forming complete rows, which then vanish. When the shapes fill up to the top, the game ends. You can optionally select a level of play.

The default level of play is 1.

The default control keys are as follows:

j
move left
k
rotate 1/4 turn counterclockwise
l
move right
⟨space⟩
drop
p
pause
q
quit

Play level can be given as an argument to the program.

At the start of the game, a shape will appear at the top of the screen, falling one square at a time. The speed at which it falls is determined directly by the level: if you select level 2, the blocks will fall twice per second; at level 9, they fall 9 times per second. (As the game goes on, things speed up, no matter what your initial selection.) When this shape “touches down” on the bottom of the field, another will appear at the top.

You can move shapes to the left or right, rotate them counterclockwise, or drop them to the bottom by pressing the appropriate keys. As you fit them together, completed horizontal rows vanish, and any blocks above fall down to fill in. When the blocks stack up to the top of the screen, the game is over.

The score list is produced at the end of the game. The printout includes each player's overall ranking, name, score, and how many points were scored on what level. “*”.

/var/lib/bsdgames/drop4.scores
high score file

Adapted from a 1989 International Obfuscated C Code Contest winner by Chris Torek and Darren F. Provine.

Manual adapted from the original entry written by Nancy L. Tinkham and Darren F. Provine.

Code for previewing next shape added by Hubert Feyrer in 1999.

May 31, 1993 Linux 6.8.7-arch1-1