why the page is full of free games?

http://www.greenmangaming.com/s/be/en/pc/games/simulation/welcome-pack/

All games are free to create a new account...and steamgifs is full for these free games :( Only not appears Onlive why is not steam game

So what do you get with the Welcome Pack - you get the following:

Gun Monkeys (Steam)

Kung Fu Strike the Warriors Rise (Steam)

Kung Fu Strike the Warriors Rise Master Level DLC (Steam)

Onlive 7 day Trial (Other)

Nosgoth Veteran Pack (Steam)

The Journey Down Chapter One (Steam)

PLUS an amazing 23% off voucher just for you