Like Minotaur in a China Shop, the gameplay of Octodad is built around the refractory nature of the controls. The game's conceit is that you have been transformed into an octopus, for some reason, but have managed, so far, to keep your new nature a secret from your family. You have to perform a number of tasks in each room of your suburban family dwelling, under the eyes of your wife and children, without causing them to suspect that you are no longer human.
Actually, you seem to be four-limbed, although perhaps the other four limbs are merely hidden by your suit. Your limbs are, however, tentacular in nature. You can shift between "hand" and "foot" mode, and in each mode, the left mouse-button controls one limb, and the right the other. For instance to walk, you hold down the LMB to pick up your left leg, move it foward, release the button to plant your foot, then pick up and move your right leg with the RMB. Needless to say, this produces goofy and imprecise movement.
The control scheme itself is amusingly awkward, but the game shines also in its framing; Octodad is, in a sense, the game equivalent of a very dumb American sitcom. You can practically see the pitch: "It's Leave it to Beaver, but Dad is an octopus!" The voice acting and the silly tasks you're called upon to perform (clean the counter, put the dishes in the sink, clean out the refrigerator) are both challenging, given the difficulty of anything like fine motor control, and suited to the setting.
This is not as tightly designed and paced a game as Minotaur in a China Shop, but it is excellent fun.
Octodad is an IGF Student Showcase finalist for 2011.
(At present, downloads are available only via a Torrent, so you will need a Torrent client.)