The term "no deposit casino codes" refer to the special codes that must be used to redeem no deposit bonuses at some of the online casinos. Many online casinos will instantly credit your casino account with a no deposit bonus, but others will require that you use a special casino code within the casino cashier in order to redeem the bonus. This is a popular method at casinos that use the RTG or BetOnSoft casino software.
Some of the online casinos refer to them as "casino codes", but they are also referred to as bonus codes, bonus coupons, casino coupons, and even coupon codes. It doesn't matter what the casino calls them, because they work the same way within any casino that you visit. Most
of these casino codes are tagged to specific web sites, so you'll need to visit the casino from the same site where you found the casino code.