$750 Free for 60 minutes.No US.
777 Dragon Casino are offering new signups $750 free for an hour and you keep the winnings.
Sounds good but...and there are lots of buts.
1/.You have to make 100 bets in the hour (easy enough)
2/.You have to playthrough 10 x in the hour.

This is where it gets hard.You have to bet a minimum of $7500 in 50 minutes (Allow 10 min for downloading and changing games)
Thats about $150 a minute or at least $15 per spin.
Winning free spins doesn't contribute to playthrough or number of bets placed so you need to be bettting around $25 a spin to make sure, and if you get multiple free spins increase your bet to $50, or more.

3./ This is where I laugh
     Most of the slots offered have maximum bets ceilinged at a few dollars so if you pick the wrong game you'll never achieve the playthrough.

Wheel of Fortune and I think Loaded do offer bigger bets.

4/.If you win - Maximum withdrawal is $150
To receive this you then have to make a deposit of $25 within 7 days,
Then $150 is credited to your "Bonus Account" and
Then the bonus of $150 has to be played through 30 x ($4500) before its transferred to your real account.
Then you can really withdraw it.

No US or Canadians.
If you've got the $25 to spare your better of black jack whoreing with a real bonus.

Go to

http://www.777dragon.com   if you want some practice.

Good Luck
Brett666