After negotiations were completed, Kassar called Howard Scott Warshaw on July 27, 1982, to commission him as developer of the video game. Kassar informed him that Spielberg asked for Warshaw specifically and that development needed to be completed by September 1 to meet a production schedule for the Christmas holiday. Though Warshaw had spent more than a year working on consecutive development schedules for games (seven months working on "Yars' Revenge" and six months on "Raiders of the Lost Ark"), he accepted the offer based on the challenge of completing a game in a short time frame and at Spielberg's request. Warshaw considered it an opportunity to develop an innovative Atari 2600 game based on a film he enjoyed, "provided we reach the right arrangement". Kassar reportedly offered Warshaw and an all-expenses-paid vacation to Hawaii in compensation. Warshaw was flown via private jet to Warner Brothers Studios to meet with Spielberg.