As of January 2016, there is no demo for “Octodad” since the game is a freeware game. This means that the entire game is available to download for free, so a demo isn't necessary. In its entirety, “Octodad” is available for download from the developer's official website Octodad.com.
“Octodad” is a third-person adventure game where players control an octopus who is masquerading as a human. Players have to help Octodad go about everyday life, which includes fatherhood. The game challenges players to master a difficult control scheme, which involves controlling each limb of Octodad independently as he drags his body around. The goal is to complete different tasks, many of which involve completing everyday household chores without raising suspicion.
“Octodad” is full of puzzles in which players have to use Octodad's body to his advantage. This sometimes involves slipping into tight spaces or grabbing objects with his suckers. Sometimes, it's also necessary to use items to destroy other objects to complete goals.
A sequel to “Octodad” called “Octodad: Dadliest Catch” is also available, but this is not a free game. It is available for purchase from online stores such as Steam, and there is no free demo for this game either. The sequel expands on the ideas that the first game introduced, and there are more tasks and challenges for players to complete.