a major departure from the Warcraft approach, comparing its two equal sides to those of chess and stating that StarCraft would allow players to "develop very unique strategies based on which species is being played, and will require players to think of different strategies to combat the other two species." The hand-drawn graphics seen in the E3 version were also replaced with rendered graphics. In early 1997, the new version of StarCraft was unveiled, receiving a far more positive response. However, the game was still marred by technical difficulties, so Bob Fitch completely redesigned the Warcraft II engine within two months to ensure that many of the features desired by the designers, such as the abilities for units to burrow and cloak, could be implemented. Later improvements to the game included pre-rendered sprites and backgrounds, constructed using 3D Studio Max. An isometric in-game view was also adopted, in contrast to Warcraft IIs auxiliary bird's eye perspective. In addition, the game utilized high quality music, composed by Blizzard's resident composers, and professional voice actors were hired. Despite the progress, StarCraft was slow to emerge. The continual delays inspired a group of StarCraft fans on the official forums who labeled themselves "Operation: Can't Wait Any Longer" to write a series of fictional stories in which the members of Operation CWAL attempted to retrieve the beta version of StarCraft from Blizzard's headquarters in Irvine, California. To pay homage to their presence on the forums and enthusiasm for the game, Blizzard Entertainment later incorporated the group's name into StarCraft as a cheat code to speed up the production of units and gave the group thanks in the game's credits. The game was released for Windows on March 31, 1998, with the Classic Mac OS version following a year later in 1999. Development on a Nintendo 64 version, StarCraft 64, began in 1999, converted from PC by Mass Media Interactive Entertainment—a subsidiary of THQ—and published by Nintendo. StarCraft 64 was released on June 13, 2000, in the US and Europe. It was also released in Australia on May 25, 2001. Music The musical score to StarCraft was composed by Blizzard Entertainment's composers. Glenn Stafford composed the Terran and Protoss in-game themes, while Derek Duke, who was a contracted composer at the time, wrote all the in-game music for the Zerg. The cinematic scores were composed by Stafford and Hayes. Hayes also collaborated with Stafford on