The goal of creating BTG is ambitious – namely, to completely replace Bitcoin and take the place of digital gold. They wanted to achieve this by decentralization of mining. This means that in the new system, everyone who does not want to mine the currency can independently determine the block size of the coin. By default, it is equal to one megabyte.
It should be noted that BTG is the only fork of bitcoin that can be mined using only a graphics processor, thanks to the implementation of the less demanding (than the usual SHA-256) Equihash algorithm.