For those not familiar, Super Hero Squad Online is based on the saturday morning cartoon, The Super Hero Squad Show, which has introduced the Marvel characters to a whole new generation. SHSO will be releasing as a free-to-play game with an optional subscription to unlock more content -- no word on the price point, currently. Another thing of note is that the game will be playable via browser, offering players a fast in to the action without exorbitant pre-downloads. A promotional comic for Super Hero Squad Online is also available at Taco Bell, which gives a bit of story and offers up a code for an "exclusive super-hero" according to Gazillion's release. So, if your kids -- or you -- would like to hero up with Super Hero Squad Online, head over to the official site and get signed up. Excelsior!