ION on Bittrex makes the project is more legit
No, it doesn't. ION is still the same intransparent, premined, hyperinflating shitcoin born out of Paycoin.
although the team keeps hardworking
Cloning other coins, screwing them up and producing one generic jump'n'run platform game in a year when they had promised to make "one game per month"? That's what you call "hardworking"?
they may need more marketing to help the price pump.
More marketing drivel won't help the turd that is ION. It didn't help GAW, Paycoin and XPY.io either.