NEW - straight from the factory, never played. may have case sealing sticker

LIKE NEW - solid mint overall and appears to have never been played

MINT - insert & manual are in pristine condition. literally scratch free cart

NEAR MINT - faint signs of wear, few cart scratches, but close to mint

EXCELLENT - minor signs of wear, some cart scratches. used condition

VERY GOOD - moderate wear, whitening, & cart scratches

GOOD - progressively more wear, whitening, & cart scratches than very good

POOR - an abused cart, that has suffered numerous misfortunes 

ROUGH - cart used as hockey puck. torn insert or cart sticker, you get the idea

USED - generally describes pre-owned MVS carts & various accessories (typically the non collector goods)

Be sure to use the Neo-Glossary to brush up on your Neo-Geo terminology.