Open a free account at Slotomania through this page to receive 20,000 coins for free. The bonus is as straightforward as it sounds and you only need to open the account to get the free spins.
What you can do with 20,000 free coins is very much up to you. You might choose to play games like Civilitreasures and Farm Fortune from here to the eternity or aim high and play the new Medusa Magic at 750 coins a spin.