Every bonus which will give you free goodies without the need to deposit money is classified as a no deposit bonus. We can summarise the different options into 3 main categories:
- Promotional (anything regarding promos)
- Free Spins (extra spins for you to use)
- Extra Money (credit gifted to you directly by the online casino)
Geolocation could be one of them, where only players in certain jurisdictions can make use of no deposit bonuses. Another one that comes to mind is the limit on what games you can use your bonus on.
Given it’s at every casino’s discretion how to offer a bonus, we highly encourage you to read through their no deposit bonus terms and conditions (T&Cs).