Great game but why demo?

I absolutely think this is one of the best games I have ever tried!!!! There is one tiny problem that I have with it though. This game is amazing but why did the creators make this a demo? I understand that they need a profit but it kinda surprised me cause I thought that they gave us a steal of deal but it turned out you still need to pay. Other than that it is really good and I might just buy the full version so be ready!!

Ajizzle1123 about Horizon Chase, v1.4.2