Lightmatter, an atmospheric and interestingly designed first-person puzzle game, that’s developed by Tunnel Vision, where the floor is lava, but instead of lava it’s shadows, so you can’t actually walk on a non-lit ground (you would fall), so you’d have to light up you way to pass through levels.
Inspired by great puzzle games such as The Talos Principle, Portal, Antichamber, The Turing Test and Closure
Sign-up for the upcoming alpha test by joining their Discord server and filling their form.