When looking for information regarding ACA NeoGeo The King of Fighters '97 on the Nintendo Switch (specifically the 2021 release context), it is important to clarify exactly what this product is. The "2021" date usually refers to a specific re-release edition (often the "Global Match" physical release by Limited Run Games) or simply the ongoing availability of the digital version on the eShop.

Pros:

version is a faithful reproduction of the original MVS arcade hardware. It features clean 16-bit graphics and a vibrant television-broadcast-style presentation. The download size is approximately ACA NeoGeo: The King of Fighters '97 – Review - GameFAQs