Now that I have that out of the way, The King of Fighters Collection: The Orochi Saga is a 5 game compilation from SNK's seminal fighting series starting with King of Fighters '94 and ending with King of Fighters '98. The King of Fighters is actually a "best of" match up in the SNK fighting gallery. Characters from Fatal Fury, Art of Fighting, and other SNK games come together to beat each other senseless to win a tournament.
If SNK does only one thing better than everyone else, it is their ability to create beautiful 2D sprites. Nearly every character model is animated wonderfully and backgrounds looked excellent for their time. It is a testament to the staying power of a good visual design (not polygon count) when a 10 year old game can still look better than most modern ones.
If only the sound stood up to the same level as the visual department. Unfortunately, The King of Fighters Collection: The Orochi Saga has a big problem that really hinders its sound quality. At the start of nearly every match I played, there is an audio bug that won't play any sound effects during the first few seconds. After that though, it plays catch-up by playing all the sounds in quick succession to make a horrible cacophony of fireballs and roundhouse kicks. This is something that should have been caught in the QA department.