This variant is usually played with a dummy hand and a chicken fee.

These variants are all quite old, and were probably all played without drops.

This variant is played only in Slovakia and probably by the children.

As a result, this variant is often played shorthanded - usually with 6 players per table.

This variant has been played in a tournament format in California.

Another variant of the game still called Foot Hockey, is played by children ranging from age 6 to 13.

These variants are usually considered to be games involving big money, and are most commonly played in private.

The most common variant of Black Box is played on an 8x8 grid with five (or more) atoms.

These variants were popular in India until the 1960s, and are possibly still played in rural areas.

This variant is normally only played when lacking a fourth player.