The roster covers 24 recognizable people, allies, aliens, and creatures across the Half-Life games, including the expansions and Half-Life: Alyx. It excludes generic soldiers, minor scientists, Portal characters, and non-game adaptations. Name the characters from memory, answer trivia about the game's story, developer, and awards, pick roster members out of a tile grid of decoys, and fill in the most famous lines. Name the characters from their art and match each to a picture. No ranked mode (single game).