What kinds of official albums are there?
As is usual in music, in addition to the original soundtracks, there are also various subtypes such as special and extended editions, radio scores, etc. However, in the case of video game soundtracks, the music sometimes differs between the game versions. This means, for example, that the score for a Dreamcast game can be different from that of the arcade version. In this case, I always try - unless otherwise noted in the respective review - to take all versions into account and at least list them in the score.