There are a number of these Free Play, Free Time or Free Spins promotions going on at several Online Microgaming Casinos and InfosGambling.com give you a quick overview of all those currently with such offers.

It is HIGHLY RECOMMENDED that each player read the terms and conditions for this Free Time Offers at the casino website for each offer you wish to participate in.

Quite often navigating the net you would find online casino banners like:
Play at our online casino with NO RISK to your personal funds!
Play any game with $1500 totally free and whatever you win in your first 60 minutes is yours to keep!

This is not a fixed or percentage bonus on your first deposit, it is something different: these casino bonuses are fixed amount of casino chips rewarded by the casino to your player account to play for real money and a set time limit.
Any casino bonus winnings generated over and above the casino bonus are yours to keep.

Ok, but where is the trick?

For online casinos the benefits of this new tactic is obvious.
In the case when they give large no deposit casino bonuses, but limit their wagering time by one hour play, the casino would proudly announce on the front page of their website: “$1500 totally free no deposit casino bonus, whatever you win in your first 60 minutes is yours to keep!”.

We have to agree that at the first glance the casino bonus promotion looks quite attractive, but it is difficult to escape the impression that the online casino is throwing dust in our eyes.

Routine classic 100% sign up casino bonus up to $100 looks miserable, comparing to that new one.
It seems that if you get $1000 – $ 1500 free play bonus, more likely one hour later you would have to order a lump sum money to withdraw.

The only tricky part here is that you may accept this no deposit casino bonus offer, start wagering the rewarded casino chips, say, an hour, and all that you won the casino would credited to your account, too, in the form of bonus and still not as your real cash money.
This credited casino bonus is then a subject to the standard bonus wager requirements.

However, some online casinos, in case when you loose the free play no deposit casino bonus, you still are eligible to claim the old classic 100% sign up casino bonus up to $100 if offered by the casino.