Play Tetra Blocks, the tetra blocks game. Tetra Blocks is a fun online game that's simple to play. The graphics are both simple and eye-catching and I immediately liked the game as soon as I started playing. You are presented with different shaped pieces that fall from the top of the screen and you can turn them different directions and move them side to side. The goal is to make the pieces fit together to make lines, which removes the blocks. I like the colors in the game and that it's challenging but not frustrating. My kids are always curious about a game when I'm playing one and this is a game I would say yes to if they asked to download it.