Actually, there is but it's a scam/very poor quality . If you tried Telegram before then you will understand. There are channels there where you can olay and earn crypto (particularly btc and eth) at the same time andmost of them are simulation type of game. For example, you have an animal with equivalent hashrate power then as you are leveling the hashrate of it also increases. You can also invest to make your hashrate bigger thus getting profits faster which you can later convert into real btc . That was so ridiculous but got a good concept tho. If bigger and legit gaming companies will develop a better game prior to the concept then much better. Now the only question is where they will get the funds .