Bang! Shōwa Rider Field Day!!! (First Part) (Last Part) (ガチ!昭和ライダー運動会!! (前編)(後編) Gachi! Shōwa Raidā Undōkai!! (Zenpen) (Kōhen)) is the twelfth episode of the webisode series, Kamen Rider Decade: All Riders Super Spin-off.
Bang! Shōwa Rider Field Day!!! (First Part) (Last Part) (ガチ!昭和ライダー運動会!! (前編)(後編) Gachi! Shōwa Raidā Undōkai!! (Zenpen) (Kōhen)) is the twelfth episode of the webisode series, Kamen Rider Decade: All Riders Super Spin-off.