An interesting 'game', not a lot to actually do, other than building your factory & defenses, and then saving your earnings so they get converted into TRX.
The issue is if you are not watching someone will steal your Goo.
No biggie, just steal someone elses. :-)
But once things are set up and you get the hang of it, it does seem like a simple & easy way to earn TRON.
Which of course can be sent to binance and converted (via a BTC step) into steem.
To get started in the game you will need some TRX to use as gas/fees, but a little steem can be sold on binance to get that if needed.
The game runs on Chrome & uses the Chrome wallet.