There is a fact of trueness on the concepts of your game: Most probably there will be signs of life in the external universe. But the universe itself is sooooo extense that probably both us and the other civilization will get extincted before finding both together.
I minded that you wanted gap that in the game and the concept of loneliness got in a cool way. Spent a bit exploring and crashing into stars (lol) and finding very little. Bit confused about WASD controls and zoom (not having a mouse but a touchpad this time). Interesting concept to develop man!