A character sheet is a record of a player character in a role-playing game, including whatever details, notes, game statistics, and background information a player would need during a play session. Character sheets can be found in use in both traditional and action role-playing games. Almost all roleplaying games make use of character sheets in some fashion; even "rules-light" systems and freeform role-playing games record character details in some manner.
The role-playing video game equivalent is known as a status screen. Some non-role-playing games, such as some board games and party games, also use records that could be compared to character sheets.
What is considered relevant can vary by game and personal preference—one player may consider his character's eye colour or personal background relevant while another might not, but both may be required by the game rules to note down on their sheet if their character suffers an injury.
Character sheets for a game are usually found within the game's main rulebook, and permission is almost always given for players to this sheet. Some publishers sell preprinted sheets separately. Many offer PDF files with character sheets for the players to print out themselves. It is not uncommon for players to create custom character sheets, to their own design, rather than use the publisher's “official” offerings.
A player may have an additional character sheet if he also controls a second character, a cohort or a hireling, but this is less common. The game master, who runs the game, may optionally keep proper character sheets for non-player characters (NPCs) if he wishes to keep full information on the character. Some rulebooks offer special “NPC sheets” for this purpose that are considerably smaller than the usual (main) character sheets.
A character sheet is likely to include fairly stable attributes, such as the character's name and physical characteristics. It may also include values that change often such as experience, abilities, health/vitality (e.g. hit points) and an inventory of items possessed. It is common for a character sheet to essentially be a record of a character's history as changes are made and important things noted. It is referenced during gameplay. Despite the name, a single character "sheet" may actually be two or more pages in length.