With the addition of the UCG Reward Package in the Free Rewards Package we have seen much interest from the community about obtaining such codes. These codes are given out by Unified Competitive Gaming through their social media outlets which includes the following:
Most often, you will need to answer a question on one of these pages to be entered into a 1-2 day raffle for your chance to win, so just keep your eye out. Alternatively, during UCG Event codes are given out in throughout the duration of the stream. Currently, the only other way to obtain one of these codes would be from other giveaways UCG has supported such as AiC and Hysteriaaa's current giveaway going on via his youtube account which can be found here: http://www.youtube.com/user/v3Movies
Hope this answers any of you questions and good luck obtaining a code!
These codes are limited to one per account.