Some variants of the story added that Baldwin's head was never found.

This variant is rare, though more common in American versions, and adds an extra element of strategy.

M59-based variants added in 1993 for handguns.

Some variants add additional rotation(s) to the standard Butterfly twist.

Two variants, the noun secrecy and adverb secretly, add a new dimension.

The variant added wing pinion tanks, and offered greater capacity and range.

A variant of the value added score is used in the three medical subjects - medicine, dentistry and veterinary science.

Pedro uses a regular pack of 52 cards, but some variants add a Joker.

Some variants of the home level add specialty shops, quest locations, or a wilderness through which additional towns can be discovered.

Other variants without nose antennae or searchlight added a 20 mm cannon to the nose.