If you’re itching for a new Ben 10 game, but don’t want a rushed flash-based game made to cash in on the franchise, then you may want to check out Ben 10: Ultimate Crisis, available for free at Cartoon Network’s official site.
Ben 10: Ultimate Crisis uses Unity 3D, the same browser-based game engine used on Marvel Super Hero Squad Online and Cartoon Network’s Fusion Fall MMO, and as such, the game has graphics that are ridiculously good for something that runs straight from the browser.
The game puts you in control of Ben Tennyson in his Ultimate Swampfire form, and gives you a weak and strong punch, and a fireball, which you can string together to create devastating combos and special attacks. Waves of Aggregor’s henchmen (bots?) attack you, until Aggregor himself appears as a boss. If you sign in with your CN account, the game can keep track of your highscores and achievements.
The game can be played for free by visiting this link: http://www.cartoonnetwork.com/games/ben10/ultimatecrisis/index.html