Valve has filed a lawsuit against a Singapore-based tournament organizer for allegedly failing to pay the winners of two Dota 2 events it held last year. According to the suit, the company owes about $750,000 USD (about £577,000) in unpaid winnings and wages. Dot Esports reports that Global Electronic Sports Championship ran two Dota 2 Minor tournaments last year, GESC Indonesia and GESC Thailand, according to Valve marketing vice president Doug Lombardi explains. Those tournaments were held in March and May 2018, but by the fall, GESC had failed to pay out prizes to the winning teams, and had also failed to pay contractors and on-screen talent who worked the event. Those allegations were published in an open letter posted in October 2018, and Lombardi tells Dot Esports that Valve filed its suit with the High Court of the Republic of Singapore April 8 of this year. Further, Lombardi says Valve has severed ties with GESC. “Our agreements with tournament operators require timely payment to participants,” Lombardi said. “We feel this is vital to the success of these events long term. When operators fair to meet those requirements, we follow up.”