The Doctor Who Alien Attax Trading Card Singles 1-238, released by Topps in 2012, offer fans of the popular sci-fi franchise a chance to collect and trade unique cards featuring various aliens and characters from the Doctor Who universe. These non-sport trading cards provide a fun and interactive way for fans to engage with their favourite characters and expand their collection. With a multibuy option available, fans can stock up on their favourite cards to enhance their collection and unlock new hidden characters.