This is a great deal for the standard version of Dishonored. If you are like me and do not really care about DLC, then this is a great deal for those of you who have not yet played or do not own Dishonored. It is a great game which will give you plenty of joy and entertainment.
No idea about the bonus game but I assume it will be a random game.
This is a Summer Sale flash deal so only lasts 12 hours. At time of posting there are six hours left (I know this is quite unfortunate for Aussies and those Ozbargains users who are not night owls).
Gamersgate has it for $2.89 at the moment (no bonus game) here for anyone that missed this deal.