You can see reviews from the same users like you on crypto totem. It seems to me that this will allow you to get the most truthful information at first hand. Perhaps among the many crypto platforms reviews you will also find the opinion of expert traders. But what I'm absolutely sure of is that there will be information about most of the cryptocurrency exchanges.

It is easiest to give advice to others, but hardest to give advice to yourself. Do you want to hear the magic formula, like 20% btc futures / 20% altcoin / 60% btc spot that will make you a millionaire? Then I will disappoint you. No one can see the future and no one knows what proportions will be successful and profitable. Everyone makes their choice based on their belief in one or another coin. These predictions are similar to playing in a casino. You may or may not be lucky. It is only your choice and decision, as well as your risks. I can only advise you on the crypto calendar on Cryptototem website if you wish to participate in the crowdsales. 

Is the project still alive? I don't see any activity in this topic from developers. I also found it strange that there are no reviews about the project: https://revain.org/blockchain-games/crypto-space-commander. Someone had to try and play it and leave their opinion, didn't they? 

I would not limit myself to only five of these games, since at present there are more and more choices. Before investing in any of them, I would consider other options too, and of course, read reviews. For example, you can do it here - crypto games. But I would rather read reviews on various platforms to get the most complete information.