|This content is obsolete and article is archived. Any information given are to be taken as reference.|
- This item was replaced by Mileage Decoder in later updates.
The A Decoder works similarly to the regular Advanced Code Decoder and Code B Decoder, as all three are compatible with the Code Box and sold in cash points. However, the real difference is that the A Decoder offers a different set of contents as opposed to the other two. Most weapons added are the Coded Box weapons from 2011 ~ 2012 and Volcano, the main prize of Letter Collecting Event in 2011.
- South Korea
- In Indonesia region, this was the only decoder available to decipher the Code Box before releasing Mileage Code Decoder.