You can view how to earn entries into each game here: http://www.krowdfit.com/sweepstakes-rules

Reward pools and number of winners increase as the KROWD grows.  For every 5,000 new members added we increase the rewards pool $10,000 per month. For more information on how the game works and the device we use, click here: http://www.krowdfit.com/howitworks/