During this year's RebootDevelop, a game developer's conference in Europe, Jonathan Blow, creator of Braid and The Witness, took to the stage to give a presentation on programming. During the presentation, he showed off a slice of his new untitled project.

If you fast forward to the 5:32:00 mark in the stream, you see it for yourself. The prototype looks like this:

Blow takes care to say "this is a work and progress" and that the visuals are not final. The game is grid-based and features a character who can run around, but nothing else is clear about gameplay at this point.

You can read our review of Blow's last game, The Witness, here.