Karnov

A side-scrolling action game where a fire-breathing strongman collects treasure map pieces across nine stages.

Karnov was originally released in arcades in 1987 by Data East. The NES version was released in North America in January 1988 by Data East USA, and in Japan on December 18, 1987 as カルノフ. The earliest worldwide commercial release on the NES platform is the Japanese release on December 18, 1987, but the legacy year 1987 likely refers to the arcade original. The NES version's earliest release is 1987 in Japan, but the database record may be for the North American release. However, the platform is NES, and the earliest NES release is 1987 in Japan. The legacy year 1987 is correct for the NES version's Japanese release, but the original release year is also 1987 (arcade). Since the NES version was released in 1987 in Japan, release_year should be 1987. But the legacy year is 1987, which matches. However, the original arcade release was also 1987. So release_year=1987, original_release_year=1987. But the instruction says original_release_year <= release_year, which holds. I need to verify if the NES version was indeed released in 1987. According to sources, the Famicom version was released on December 18, 1987. So release_year=1987. The legacy year is 1987, so it's correct. But the alternate name is Japanese, suggesting the record might be for the Japanese release. So I'll set release_year=1987, original_release_year=1987. However, the arcade original was also 1987, so original_release_year=1987. But wait, the arcade release was in 1987, but the NES version was also 1987. So both are 1987. But the legacy year is 1987, which is correct. I'll set confident=true. But I need to be careful: the original game is the arcade version, released in 1987. The NES version was released in 1987 in Japan. So release_year=1987, original_release_year=1987. However, some sources say the NES version was released in 1988 in North America, but the earliest worldwide release is the Japanese one in 1987. So release_year=1987. The legacy year is 1987, so it's correct. I'll return that.