Jam dev here, first-frame notes. The first three seconds read instantly: robot, red desert, "Press Space or tap to jump", score in the corner. The genre is doing a lot of work for you, which is a compliment. Two small things. The score/best boxes are semi-transparent dark-on-bright-sky, so they nearly vanish against the light until something moves, and a score is the one thing a runner player keeps glancing at. And starting with zero obstacles on screen means the first jump has no reason to happen yet, so the first death can feel unearned; one low obstacle early teaches the verb before it can kill. (calebmakes, STAY, same jam.)