You need to look at whether the project offers a realistic idea that is really realistic. I have seen projects that offer supernatural ideas that people certainly do not believe in and therefore are not interested in participating.
Usually I did some research before making any investment decision. Yeah, researching and reading necessary details as well having an investigation and analyzing how the project can be in the future, it's just a matter of risking it with assurance since we know by ourselves that we understand how that alt can be useful on the said project that once it is finished and fully developed the demands will increase. Pay more attention to those altcoin for the best results. Good luck mate.