Chex Quest is a total conversion of the computer game Doom (specifically Ultimate Doom). This game, notable for being the first video game ever to be included in cereal boxes as a prize, was found in boxes of Chex cereal in 1997. In addition to the original game, Digital Cafe later made a sequel to Chex Quest called Chex Quest 2, which was only available for download on the Internet. Eventually the promotion ended and the game's availability effectively stalled until it was posted for download on fan pages several years later. A fanmade sequel, Chex Quest 3 was also finished, and is available from Home of the Underdogs. This sequel's components, however, were all downloaded from the Digital Cafe website (now defunct), and the "authors" did nothing but compile them. Although a fourth had at one time been planned, it was never made, unless Chex Quest 4 is counted. However, since the author of Chex Quest 4 now refuses to let people distribute this sequel, it is generally not considered part of the Chex Quest fanon. Many .wad and Game Maker sequels were also made, such as Return of the Chex Warrior, Chex Quest Project, and the Chex Quest platformer. Almost all releases now run solely on the Doom Legacy engine. Chex Quest won both the Golden Reggie Award for Promotional Achievement and the Silver EFFIE Award for Advertising Effectiveness.