What is half life cd key?

Half-Life is a popular first-person shooter game that was released in 1998 by Valve Corporation. When purchasing the game, players are given a unique Half-Life CD key, which is a code used to activate the game and enable access to online play. The Half-Life CD key is a 13-digit alphanumeric string that can only be used once to activate the game on a single computer. The CD key is typically printed on a sticker on the game's packaging or emailed to the purchaser after an online purchase. It is important for players to keep their Half-Life CD key safe and secure, as it is necessary for re-installing the game or accessing certain features. Additionally, sharing or selling Half-Life CD keys is against the game's terms of service and can result in the key being invalidated.