Unless, you're stuck on having to play on the actual hardware - many of the games put out by

are available on budget compilations released for

, PSP and Wii - many just coming out late 2008 and retail for $9.99 each on the

. (that's the version I'd want as I don't yet have a Wii or PSP so haven't checked if the prices are different) $9.99 new (or some places like GameStop have em at $14.99) is a sweet sweet price for these titles.
Arcade Classics V1 for

, Wii and PSP includes: (and these are the arcade versions!) Art of Fighting, Baseball Stars 2, Burning Fight, Fatal Fury, KOF 94, King of the Monsters, Last Resort, Magician Lord, Metal Slug, Neo Turf Masters, Samurai Shodown, Sengoku, Shock Troopers, Super Sidekicks 3, Top Hunter, World Heroes.
Fatal Fury Battle Archives Vol. 1 for

includes: FATAL FURY, FATAL FURY 2, FATAL FURY SPECIAL & FATAL FURY 3.
Fatal Fury Battle Archives Vol. 2 for

includes: REAL BOUT FATAL FURY, REAL BOUT FATAL FURY SPECIAL and REAL BOUT FATAL FURY 2; The Newcomers.
World Heroes Anthology for

includes complete collection of World Heroes games: WORLD HEROES, WORLD HEROES 2, WORLD HEROES 2 JET, and WORLD HEROES PERFECT.
Art of Fighting Anthology for

includes complete collection of Art of Fighting games: Art of Fighting 1, 2, & 3.
Metal Slug Anthology for

, Wii and PSP includes: METAL SLUG 1, METAL SLUG 2, METAL SLUG X, METAL SLUG 3, METAL SLUG 4, METAL SLUG 5, METAL SLUG 6.
The King of Fighters The Orochi Saga for

, Wii, and PSP includes: KOF 94, 95, 96, 97, 98.
Samurai Shodown Anthology for

, Wii, and PSP includes the complete collection of Samurai Shodown games: Samurai Shodown, I, II, III, IV, V, and VI.
All those games are "Great Value" stickered games at a local chain here and I can get for $9.99 each on

which is totally the way to go. I don't have any of em yet, but I've been talking with friends that do and they say they're pretty sweet.