Analysis of information sources in references of the Wikipedia article "Broly" in English language version.
...none of these films was considered official canon because Broly never appeared in Dragon Ball creator Akira Toriyama's manga series... However, with Akira Toriyama handling the story and characters of Dragon Ball Super: Broly, that's all about to change.
Taiketsu was certainly the first American-made game to feature Broli as a playable character, but hardly the first-ever game to feature him at all. Back in 1993 (nearly a decade before Taiketsu), Super Butōden 2 was released for the Super Famicom (SNES) in Japan, and debuted a couple characters that Americans would not see in either anime or especially video game form for nearly another decade.