Sure, you could say that wanting to buy more games when you have a bunch already is greedy. But when a sale is happening and you can get a game for half its usual price, that's not being greedy. It's being thrifty and smart. That's why you shouldn't feel bad for heading to the AEG webshop and getting Greedy Greedy Goblins.
From the announcement:
Hall of Fame Designer Richard Garfield (Magic: The Gathering) brings you to a world of gold and goblins, with Greedy Greedy Goblins! This frantic game of treasure grabbing puts you in charge of a team of goblins racing against others to secure the most wealth. But be careful, everyone is using a lot of dynamite down there, excessive amounts, and it could come crashing down on you at any moment!
No code needed, discount taken at check out.