Yes of course, gambling involves chances of one occurrence over the other or  series of occurrences with a reward if it turns out in your favor. Its all evident in this situation. the fact that its free does not negate that you're kept in  suspense and  made to do  some calculated brain works to come up with your prediction in anticipation of the cash reward. In my  own opinion about the free nature,I see it as a tool that is used to pull traffic of gamblers  to Betking which I believe its behind the project. The rules may change when they're done pulling the desired traffic. it still has link to the official Betking platform for those who want to bet with real money. its clearly Gambling.