Yes, you can play the free lotto daily as well as any other bonus. You don't have to make a deposit in order to get free lotto tickets (free forever).
So far, I got 1 correct lotto ball at the moment. and today I got my second claimed. Seem the user can claiming 1 free ticket every 8 hours.
There have been some big wins, over 1 BTC and some even won many BTC in a single day (not just lotto, playing slots and roulette too).
there is a very very lucky guy who got 1 BTC by playing a free lotto ticket.