Word Zero is a crossword board game designed for two players, where participants take turns placing tiles on a board to create words. The game stands out due to its focus on providing a distraction-free experience, free from advertisements, rewards, and in-game manipulations. Players can enjoy a straightforward gameplay model that requires a single token for each match, with new users receiving free tokens to begin their journey.

The game features a correspondence style, allowing players up to three days to make their move, promoting a relaxed pace. Word Zero supports English and Spanish, utilizing the NASPA Word List for gameplay. Players are encouraged to rely on their skills without external assistance, adhering to an honor system. Additionally, an Elo rating system helps reflect each player's strength, and the option to compete against computer players is available, ensuring clarity between human and AI opponents.