Yeah, that happens to a lot of people.
When ISS first came out on the PS2. people thought it was the follow-up to ISS Pro, ISS Pro 98, ISS Pro Evolution and ISS Pro Evolution 2 (all on the PSX/PS1).
When in fact, it was the follow-up to ISS 64, ISS 98 and ISS 2000 on the N64.
Two...