U.N. Defense Force: Earth Joker (Japan, prototype?) is a Japanese prototype arcade game. Information about the release and development history remains limited. This variant emphasizes its Japanese origin and prototype status, meaning it's likely an incomplete or early version that may differ significantly from a final release (if one even occurred).  We lack sufficient information about its gameplay or creators, but it likely shared elements with the standard U.N. Defense Force: Earth Joker.

U.N. Defense Force: Earth Joker (Japan, prototype?)

Two Crude (US FT version)