I don't really understand how this works and how you unlock abilities, and whether anyone knows if there are any hidden rewards for maybe winning a certain number of games back to back or something, like a title or minions? I ask because there are still quite a few minions that no one knows where they come from. I'm not saying there has to be a reward. Was just curious.

I know you get the points displayed on the tiles and all tiles horizontal or vertically that match, but not sure if it matters where on the grid these things are located, and is it based on addition or multiplication? I assumed addition.