Waveform is an interesting experiment in minimal game design: you stretch and compress a wave passing through space, manipulating it to fit the patterns it encounters. It's on the relaxing end of the spectrum, with only one control and chill-out music. Despite a troubled inception, failing to reach a modest Kickstarter goal of $8000 funding, it's managed to wiggle into Steam's servers, oscillating to fit the wavelength of Gabe Newell's heart. Fancy seeing what it'll look like? Video here.
It's got some (oscillo)scope, and it'll come with a wave editor as DLC, although there's no word if that's free or paid for.
Obviously it would be handy of the launch trailer told is when the game is due, but this does nothing of the sort. You'll just have to ping a rubber band between your fingers, or get a long length of rope and flick it, watching the flick move along, while you wait for it to land sometime in March.