I loved the aesthetics of this game, you did a fantastic job on that retro shader, pressing the right keys felt super satisfying. I was able to save the world with about 2:30 left on the clock. Love the progression between all three levels, and the concept is quite brilliant. Usually I will say that the lack of music is a bad thing, but for your game I found it a wise choice, allowing the player to fully focus on the gameplay, with the stress of a clock ticking down. Love the variations as well, with keys to increase / decrease brightness or change the language. Overall it was very innovative and super fun to play through. The one thing I would improve would be the readability of the letters which was a bit tough at times (O/Q/D especially). Great job!