Hammerin' Harry is an arcade game with a worldwide release. The worldwide designation suggests that the game had broader distribution than its US counterpart.  More research is needed to obtain detailed information about the developer, release date, and specific differences from the US version. Additional details concerning the gameplay mechanics would also be needed to provide a complete introduction.

Hammerin' Harry (World)

Halfway To Hell: Progear Red Label (2016-1-17 Red label ver)