The HeiseiGame's name comes from Heisei (平成?) and Game, which comes from Gamera.
In comparison to the ShodaiGame suit, this suit is noticeably different. From this suit onwards, the suit actor's arms were placed inside the suit's arms. This meant that unlike in the Showa era Gamera movies, where Gamera's arms tended to flop and flail around randomly, this suit allowed for more accurate and precise motions.
HeiseiGame's eye sockets are also more circular compared to the previous suit, and the suit's head is more muscular. The suit's shell is similar to the ShodaiGame, but its plates are affixed tightly, and are more detailed.