Steemmonsters has 2k active daily players and most of the people are educated about cryptocurrencies and blockchain. If you want to promote your crypto related project then creating a tournament in steemmonsters can be a good option for you. It won't cost you too much money to make your own tournament. All you need to do is paying 2 usd fee and choose parameters for your tournament. The more money you put in prizes the more people will join the tournaments because of the high incentives. I would choose bronze league to make tournament because all league players will want to join your tournament. With creating tournaments on steemmonsters more people will know about your project.