CTRL - 2-4 Players - Age 7+
In Ctrl, players try to dominate a cube by crawling over it with their coloured bricks, preferably covering other players' bricks along the way.
In more detail, you start with a 3×3×3 cube that has one block of each player colour stuck into one of the cube's holes. (In a two-player game, each player controls two colours, but at the start of play they secretly choose one of those colours to be their scoring colour, with the other colour serving only as a blocking mechanism.) Each player has a matching coloured flag that sticks out of their block.
On a turn, a player removes their flag from its current location, adds one cube of their colour to the side of any of their blocks (where such a move can be made), then they "grow" their colour by adding two blocks in a straight line from the block they just added, crawling around corners and covering other players' blocks if needed. To end your turn, plant your flag in one of your final blocks, ideally blocking where someone else might like to play while also preserving future ground in which you can play.
Once all the blocks have been placed, you calculate your score by looking at the structure from all four surrounding sides, as well as from the top, and counting each unblocked square of your colour that is visible. Thus, if you plant a block high up on the cube, you can possibly score 5 points for it since it would be seen from all sides and the top. Climb high, and block others from blocking you!