Richie Furst used to have a lucrative career on Wall Street; this history prevents him from receiving tuition assistance at Princeton, so he funds his master's degree by referring students to online gambling, for which he receives a cut. After the dean threatens to expel him for these activities, Richie tries to win his tuition using his excellent poker skills in online gambling, but he loses all his money to a cheater, something he is able to prove by statistics. Richie travels to Costa Rica to confront Ivan Block, who runs the biggest empire of online gambling websites in the world, including the one Richie lost his money on. After Ivan sees the statistics, he finds that coders have coded the software to allow them to cheat. After firing those involved, Ivan tells Richie he'll pay him millions per year to stay in Costa Rica and assist with the site. Richie slowly begins a romantic relationship with Rebecca Shafran, ex-lover of Ivan, who appears to have no objections. Ivan has Richie blackmail a gaming affiliate with videos of his infidelity to force him to sign with Ivan. FBI Agent Shavers kidnaps Richie and threatens to ruin his life in various ways if he does not assist in getting Ivan convicted. Shavers cannot do anything legally as he has no authority in Costa Rica, but he takes advantage of this to use tactics that would be illegal and unethical for law enforcement inside the U.S. Ivan tells Richie that everyone in the organization ends up confronted by Shavers at some point. Over time, Ivan's organization is revealed to be less than ethical. He sends Richie to bribe Costa Rica gaming director Herrera with too small a payment, which leads to Richie being beaten. Ivan tells him it comes with the territory of such a lucrative career. When Richie tries to leave the country, Shavers has drugs planted in his bag and offers to overlook it if Richie agrees to cooperate. A local police officer reveals that the police dislike Ivan but that he would buy his way out of any trouble and destroy whoever tried to take him down. Richie's friend Andrew Cronin, who works on the software design for Ivan, suggests that Ivan is running a Ponzi scheme; the players' accounts have no actual money, and Ivan uses the money as his own bank account, keeping just enough to allow players to cash out when they need to. Aware that Richie might be wanting out, Ivan buys the massive poker debts of Richie's father and brings him to Costa Rica, using him as a hostage. Ivan throws Herrera and his bodyguard into the river to get eaten by the crocodiles, but pulls them out before they are eaten. Cronin disappears and is later found nearly beaten to death. Thanks to Rebecca betraying Ivan, Richie finds out that he has been setting him up all along; Ivan is about to move his operations out of Costa Rica, planning to leave Richie behind as the fall guy. Richie gives out massive bribes to local officials, including low-level police officers. When the moving day hits, Ivan calls to sarcastically apologize to Richie, telling him he will be busted, as Ivan flies away on a private jet. When Ivan lands, he finds he has been betrayed: the bribed pilot has instead flown him to Puerto Rico, an American territory. Shavers and other FBI agents move in to arrest him as Richie and Rebecca fly away on the private jet. Shavers says they're free to go because Richie left a flash drive for him containing sufficient evidence to convict Ivan.
took place in the summer through the winter of 2012 in Puerto Rico and on the Princeton University campus. Despite the fact the film has several graphic indications that all events are taking place in Costa Rica none of the scenes were shot in the Central America nation.
On Rotten Tomatoes, the film holds a rating of 8% based on 113 reviews, with an average rating of 4.08/10. The website's critical consensus reads, "It has an impressive cast and an intriguing premise, but Runner Runner wastes them on a bland, haphazardly assembled thriller with very little payoff." On Metacritic the film has a weighted average score of 36 out of 100, based on 31 critics, indicating "generally unfavorable reviews". Audiences surveyed by CinemaScore gave the film an average grade of "C" on an A+ to F scale.