Here's how it works:
1. Click on the link http://prizegenius.com
2. Now you can see their webpage with the three free gifts listed with the chance of winning them mentioned above.
3. Click "select this prize" underneath the prize you want to win.
4. When you press "select this prize" you will be taken to a page which tells you to complete a sponsor's offer. The offers are very simple as most of them only require signing up and confirming your email.
5. After finishing the offer you can go back to the PrizeGenius window to see if you have completed the offer or not and you should always keep in mind that you can try any other offer if the gateway doesn't unlock.
6. Once you complete the offer you will be taken to the Prize Button page where you can click the button and see if you win.
7. The best part of this site is that you can play as much as you want, but you have to keep in mind that you have to complete a different offer each time.
It's really easy and it also doesn't require much time to win a free gift card. I recommend PrizeGenius as a better alternative to Lockerz and Swagbucks.