To Infinity and Byond
Leaving the screen seems like an interesting concept, but uhm. After two minutes of upgoing I decided to turn around and try to go back to the screen. I think the pink thing hit me, because I got a "game over" but I'm not sure - weren't able to get back on screen.
Maybe killing the player after 15 seconds offscreen could help. Or add a limitation - but this would probably frustrates player too much, because they.. just don't see a thing.
Additionally there seem to be a lack of enemies. After the purple "i-stay-in-the-middle-of-the-screen"-
thing just nothing happened anymore. Maybe all the interesting things spawned near me, so i were not able to see them.
All in all an interesting concept that should be expanded.
Not sure about score, so a neutral 5/10