1v1 An abbreviation of 1 versus 1, denoting two players battling against each other. 100% To collect all collectibles within a game, either indicated within games as a percentage counter or determined by player community consensus. 1-up An object that gives the player an extra life (or attempt) in games where the player has a limited number of chances to complete a game or level. To complete an arcade (or arcade-style) game without using any additional credits besides the one used to start the playthrough.
0–9 1CC Abbreviation of one-credit completion or one-coin clear.
