Tremor Games is a website where you can Get free Steam Games, TF2 items, Steam Trading Cards and Gift Cards by playing games and completing simple online tasks.
wanna to try?, register now: tremorgames
After register, you already can earn coin to get free games, just klik Get Coin menu.
First, register here, then start earn coin
Here is a quick video detailing quickly on where to earn those coins:
This is legit website. don't be worry..