keeveek: Stealth Bastard Deluxe for sure.
johnki: If it is, then these have been some really bad hints. I was on-board with Reus or Eador because the hints seemed to vaguely resemble them. But Stealth Bastard? Other than the vague cover art inferences, I don't see it.
EDIT: See also:
Eador cover. Red eyes. :P
Reus has been semi-confirmed not to be the bonus game. Someone emailed the dev asking if there were any upcoming deals on the game and got this response:
"Hey,
There aren't any discounts planned for the coming weeks, so I guess it's "safe to buy"
You can check out the full list of distributors at reusgame.com/buy
Cheers,
Maarten Wiedenhof
Abbey Games"
As for Stealth Bastard Deluxe.. the slanted R is mostly what makes me think it's that. The developer is CURVE, and that's typically the kind of hint Jonny likes to use. Eador seems likely as well though.