You can finish Super Mario Bros 1 and 2 about that fast, right? Oh, but only if you warp, so nevermind. Even if this is unfinished, I do think this is shorter than most NES games - most of them last at least an hour or so. So this is kind of pitiful.
Back when I had my NES, I would replay games over and over until I completely mastered them, getting through them without even being touched. That's how we handled "replay value" back in the day and got our money's worth. These days I'm unlikely to go back and replay the 30-hour epics that currently exist... they're too long. So sometimes i even miss shorter games. But not necessarily 13-minute games.
Gotta love Ripley's pink jumpsuit. And the GIGANTIC ALIEN HEADS growing out of walls, of course.