You can purchase GAMECREDITS from these places
Go to Poloniex
Welcome to Poloniex. We are a US-based digital asset exchange offering maximum security and advanced trading features.
Go to HitBTC
The most advanced cryptocurrency exchange to buy and sell Bitcoin, Ethereum, Litecoin, Monero, ZCash, DigitalNote, Ardor.
Go to YoBit
Buy and sell Bitcoin (BTC) on YoBit Exchange!
Go to Livecoin
Go to BitBay
BitBay is a working real-world, fully-functional decentralized marketplace that allows you to buy and sell goods and services easily, securely, and anonymously.