Hi exhothusour ,

Thanks for your support.
The bosus system is summarized in a table on the website (https:\\nukatoken.com), but in short:

The first 5 contributors will get double NKT tokens w.r.t. the normal exchange rate (i.e. 1 ETH = 70,000 NKT). This is a 100% bonus of NKT.
When the first 5 have successfully sent ETH to the contract, the next 5 will get a bonus number of NKT of 99%, and so on untill the ones arriving as 496th and 500th. These last ones will get a 1% bonus (the bonus decreases 1% point every 5 donors).
After that, all contributors will get NKT based on the exchange rate.

So, starting from the beginning of the ICO, there will be a bonus of 100% NKT.