I came up with a way how to define scamICO from trueICO.

Invest

If the ICO has an experienced team behind it and only if they made similar products, shows you a product or a prototype or at least an understandable concept (based on previous products) with the audience, business plan with users, average check, utility and relevance - they will implement their own token that will have demand in their product and be able to freely exchangeable with others tokens at market. Also you need to consider that there is limitations for the mobile, so if we assume this is about games, then initially it can only be the desktop, everything else who are saying about games on the mobile with implemented blockchain economy will be 99% - scam, if it's not the crowdfunding of course.

Likely a SCAM

If the ICO, consist from a team of pro-cyberplayers, investors and entrepreneurs, the audience is measured roughly like the whole world + a little more, the average check is incomprehensible, and the usefulness and relevance is proved at a level - well, there is a people - everyone would need it, then run away - these investors and entrepreneurs are therefore behind this, because the developer doesn't necessary to cut the money from people.

What is your methods to determine scam or not?