this is strange, i can download and play the game, lets see if other people have the same problem.
The .rar is fine.
FYI I still get the error msg when downloading the .rar. Based on other commenting that they can play the game fine Im assuming that the problem lies on my end.
Actually when uploading the rar file to a "rar to zip" conversion site, and then extractin in zip it works fine! So yeah, I think its just me :)