We've featured this game countless times on here, so anyone who doesn't have it at this point must hate Batman or enjoy depriving themselves of pleasurable experiences. For instance, in Arkham Asylum, you can beat up shirtless, sweaty convicts for hours on end and no one will question your motives.
Why? Because you're the goddamn Batman. This was worth paying the full $59.99 for way back when, and it's certainly worth putting up $14.99 for Amazon's sale today.
Based on a preview email we received this week, it sounds like Lost Planet 2 for $19.99 (PS3/360) and Super Street Fighter IV for $19.99 (360) will also make lighting round appearances today. Go get on that.