After 8 months of development of multiplatform engine (windows\linux), our first game has reached the surface. It's mechanics is based on well known old rules. Set falling blocks in horizontal lines to clear one line, the more lines you clear setting one block, the more points you get. We added one new feature called chain. For each cleared line the chain counter goes up and multiplies score by it's value. When you place a block without clearing the line the chain counter goes down.