Twin Dragon was one of two authorized add-on packs for Shadow Warrior that were canceled during development and later released as freeware.
It features a completely new single player episode consisting of 13 levels, three new Wang-Bang levels and more.
Lo Wang also had a twin brother, Hung Lo. Because his mother was unwed, she was forced to put both up for adoption. Lo Wang was sent to a family with a good heart, whilst Hung Lo was adopted by an evil overlord.
As can be expected, Hung Lo did many evil deeds because the evil overlord taught him the dark ways of ninja fighting. Now Lo Wang is up to the task to battle through Hung Lo's evil fortress and face his twin brother.
Twin Dragon was originally supposed to be released as a commercial add-on for Shadow Warrior. After the add-on had been finished, the publisher decided to cancel the project because the sales of the original game were not as good as expected.
Some months pass and the rights for the add-on are finally given back to the original developers after a lot of complaining. This eventually led to the freeware release of the originally planned to be commercial add-on.