Chopper I (US set 1) is one of several US versions of the arcade game Chopper I. Arcade games frequently had variations across different regions and releases. The original Chopper I would likely involve gameplay focused on helicopter piloting, possibly with rescue or combat elements.  The 'set 1' designation indicates this is one specific release variation. Further research is needed into what makes 'set 1' unique compared to other versions.

Chopper I (US set 1)

Choky! Choky!