To get bitcoin by playing games, then this is quite difficult especially this year there are still many projects that extend sales. There are ways but to buy with fiat, many game projects are developing and must have the authority to achieve results.
There are many opportunities to earn in the world of cryptocurrencies. The options are many but the issue has always been that many of these options such as the blockchain games are usually not profitable unless you have many referrals so you can easily earn from accumulated referral bonus.