Yes, you can test Great Pigsby on the developer's site without having to register. The test mode would be accessible without charge on any casino website that collaborates with Relax Gaming.
How can I win at Great Pigsby?
This is a legitimate slot machine that produces outcomes at random; all you need is luck. 100 FS on Great Pigsby is a got starting point.
Can I actually gain real money playing Great Pigsby?
Yes, and the only way to play Great Pigsby for real money and receive real winnings is to have a registered account with a casino.