
The game will not be officially released until June 2nd, and it does not make use of SecuROM for DRM. Quoting: "That outpaces the 400,000 downloads over three weeks for Electronic Arts' Spore, the most-pirated game of 2008.
... Copies of the game available on file-sharing Web sites aren't the full version, Electronic Arts said. 'The pirated version is a buggy, pre-final build of the game,' Holly Rockwood, a company spokeswoman, said in an e-mailed statement.
'It's not the full game. Half the world — an entire city — is missing from the pirated copy.'"