Well i have played gambling games around 2016 the first time i played etcbet and it used ethereum classic ETC as wagered although it was no long time, and i started playing other gambling games used bitcoin, eos and right now used Tron as wagered. It gives me fun and entertainment because i can used small amount of money in cryptocurrencies especially in Tron or EOS coins.
You can play games with small capital using those coins, the reason why some gamblers choose to use Alts instead of Bitcoin, they are enjoying those games with small amount of bankroll if converted to USD, numbers of initial capital is bigger in terms of the coin itself, if you play only to enjoy this alternative will be very useful to you.