Cartoon Network Universe: FusionFall

Cartoon Network Universe: FusionFall was a massively multiplayer online game developed by Cartoon Network and Grigon Entertainment. FusionFall uses the Unity engine as its client technology basis. It was initially released on January 14, 2009.

For the first year, the full game required a subscription; free accounts could only access to a portion of the content. On August 29, 2013, the game's servers were shut down. Since the game's shut down fans have been working on ways to bring it back, going so far as to revive the game themselves, similar to Toontown Rewritten. There are currently two servers in development, one server based on the original game (Retro) and another with additional fan-made content (Legacy).

Gameplay
In FusionFall, the player takes control of a customized avatar based on characters from current and past shows. Their character is viewed from a third-person perspective with an overlaid HUD. The game had large playable environments, with travel facilitated by various warp points as well as certain temporary vehicles to get to areas faster. Gameplay primarily focused on the alliance between the heroes and villains of the Cartoon Network universe, featuring characters from Cartoon Network shows both past and present. Many characters are available as guides after players complete level four of the game. Playing past level five originally required a monthly paid subscription in the form of redeemable cards that could be purchased at participating retailers. The cards were rendered obsolete after April 16, 2010, when the entirety of the game became free to play; players with unredeemed time cards were offered a refund for their unused cards.

Subscription
When it was first released, FusionFall required a paid subscription for the full game, with a limited portion of the content available to free accounts. Free accounts could only play in the "future" portion of the game, which only allows players to collect four nanos and create two characters. The full game had a total of 40 nanos, 36 before the new extensions. To create up to four characters, players had to earn all 36 nanos during the beta testing. Players with characters that progressed into the past during the sneak peek or during a previous subscription had their characters locked until a current subscription was purchased.

Subscription plans included one-month, three-month, year-long, and family plans. The FusionFall Victory Pack Exclusive was made available for purchase when the game was released. It contained a four-month subscription, as well as a game guide, T-shirt (if bought from GameStop), and exclusive outfits and weapons for the player's character. The Victory Packs were eventually discontinued, having been replaced with one-month and three-month game card available for purchase at Target outlets.

The game was made completely free on April 19, 2010, making everything a member could have available for free.

On the same day, the game gave the player the Clockwork set. It only counts for subscribers and can only be accessed with a code.

Characters from Samurai Jack
These characters were used from Samurai Jack and all of them are non-playable characters.
 * Samurai Jack
 * The Scotsman
 * Demongo
 * Aku