Whenever my son types a bio code it says this: Congratulations, you've received a special "Behind-the-scenes" reward! and my son is wondering why.

flydicez wrote:

Whenever my son types a bio code it says this: Congratulations, you've received a special "Behind-the-scenes" reward! and my son is wondering why.

All Codes from 2008 sets always gives a "Behind-the-scenes" reward. Only 2009 (And probably next years) Codes gives MLN stickers.

flydicez wrote:

Whenever my son types a bio code it says this: Congratulations, you've received a special "Behind-the-scenes" reward! and my son is wondering why.

This are old codes. It contain a picture of the old bionicle. It's a reward. To get MLN rewards, just look after codes after 2008.

Hope this helps

That happens to the 2008 Bio-codes! The new 2009 ones give you MLN rewards!