Darksiders free Red Faction promo open to those without codes (but who still bought it new)

Got yourself a copy of Darksiders but, for whatever reason (admit it, you lost it), don't have the slip of paper it came with containing the "mystery code" redeemable for a free copy of Red Faction Guerrilla and digital art book? Seems you're not out of luck -- unless you bought it second-hand (or "pre-played," if you will).

Vigil has announced via its official Darksiders blog that those without codes, but who purchased the game new can still get the free RFG and disc full o' artwork.