Game de Check! Koutsuu Anzen (ゲームでチェック！交通安全) is a Sega Master System cartridge commissioned by The Tokio Marine and Fire Insurance Ltd. and released in Japan to teach children about road safety. It is one of the rarest Master System cartridges in existence (and the rarest of the Japanese library), being distributed in 1988 but not being sold commercially to normal consumers.
