Now through October 14th, head on over here to play the Subway Subprize Party Instant Win Game! Complete the registration form and enter a game code to enter. Game codes are found on specially marked 30oz fountain drink cups and on the back of Doritos Blazin' Buffalo & Ranch Chip Bags at Subway! If you don't have a game code, use these codes for today: 6MYYV3MH, MTM3REMM, and XHP99YPP. Keep in mind that those codes will only work for today. If you want to play daily,  the Subway Facebook Page and Subway Twitter Page regularly for FREE codes. In addition to being entered to win their daily giveaway, you can also instantly win one of 1,000 FREE $5 Subway Gift Cards! Good luck!