Winning a jackpot while playing with a no deposit bonus is possible. However, consider that the selection of games you can play with a no deposit bonus is somewhat limited. You will only find a progressive jackpot game included in the applicable games list on rare occasions. The NDB money you get in your casino account is real money you play with, meaning hitting the jackpot will result in the same scenario as if you would have deposited your own money to begin with.