Okay!
It's not all bad, Bling games actually pay out.
Admittedly it's not much (about 4 cents in BTC for 100000 points), but if you just play these games in public transit eventually it will accrue a noteworthy amount. I would advise to play these games and cash out weekly, but to not check your BTC balance till you're a couple of months down the line.
Another piece of advice: Try to cash out when the value of BTC is as low as possible, this will increase your long-term gains on playing games for profit.
They have 5 different games which amounts to give or take 200000 points per day, every cash-out generates a 7 day timer till you can cash out again.
Nice feature, you receive an e-mail from Bling whenever they've sent you BTC to your coinbase wallet.
The verdict: Not worth quitting your job over but it is a nice way to turn your commute (if you're not driving yourself) into something useful.