Saints Row. The video game series that started out as a GTA clone and then evolved into a simulation of what it's like to live in a batshit insane world populated by weirdos, psychopaths, trigger happy lunatics, power hungry sociopaths, and feisty nerds; a world where the constant mayhem, destruction, and explosions are the least of your worries. Sound familiar?
If you've never heard of the Saints Row series, this is the game franchise that, in its third installment, introduced a giant purple dildo that the player character could wield like a sword, and in its fourth made the player the President of the United States only to have them dethroned by an alien invasion from outer space and locked inside a simulation eerily similar to the Matrix (spiced with a little bit of Tron and a whole lot of crazy). This is also the game franchise that spoofed reality TV with Professor Genki, a pink cat with a penchant for destruction who ran a televised `murder funhouse' called Super Ethical Reality Climax, complete with play-by-play and color commentary. And that's just the tip of the iceberg.
If Crank is the movie that feels closest to something like a Con City movie, then the Saints Row games are easily the closest thing to a Con City video game. Well worth playing if you want a GTA clone that went off the rails and kept going. It's best to play the entire series from start to finish so you get a better understanding of the vast roster of fun and surprisingly complex characters. Just bear in mind that the first two games are a lot more serious in tone, and you may find yourself wondering where all the craziness is, but just be patient. As soon as you get to Saints Row III, you'll be wondering how the franchise went from street gang simulation to fighting a luchador in space.