| Feature | Original KOF 99 | KOF 99 Plus | | :--- | :--- | :--- | | | Slow; punishable | Faster; more fluid combos | | Boss Availability | Krizalid only via Game Shark | Krizalid selectable via simple button hold | | Kyo Kusanagi | Hidden version (Classic Kyo) | Two distinct hidden Kyos (Kyo-1 & Kyo-2) | | Armor Mode | Not present | "Super Cancel" mode enabled during MAX mode | | Infinite Combos | Several (e.g., Bao’s infinite) | Removed or patched | | Arcade Difficulty | Standard SNK cruelty | Slightly toned down for casual players |
| Character | How to select | | :--- | :--- | | | Hold START + UP on Kyo | | Kyo-2 | Hold START + RIGHT on Kyo | | Krizalid (Boss) | Hold START + DOWN on the random box (?) | | Classic Kyo (’95 outfit) | Hold START + LEFT on Kyo (depends on ROM revision) | Kof 99 Plus Rom
However, the original arcade release had several balance issues, glitches, and a steep learning curve regarding the new Striker meter. Enter (often labeled KOF 99 Evolution or KOF 99: Millennium Battle - Plus ). This is an updated revision of the original ROM, intended primarily for arcade operators to fix bugs and rebalance gameplay. | Feature | Original KOF 99 | KOF