For new people one Matic, is a side-chain on ethereum that handle transaction. Tl;dr: no fees and way more transaction speed. A game in pure ETH is near impossible for mainstream audience. I have see many solutions: enjin new Efinity layer 2, bandwidth based (Tron and Hive games), even PoW (planetarium engine). Why Matic? (if you have a post that mentions it, tell me please)