Hide and Seek can work in space, even without magical cloaking technology. Space is very big, so if you're far enough away it may be difficult to tell a (properly designed) ship from random rocks or man-made debris unless you're looking dead at it already. Especially if you're flying in an area where lots of debris is already present, like an asteroid belt or a planet's ring. Doing it in near-earth orbit might be tricky, though, since people watch the sky a lot. Information from ground-based tracking stations could be used to identify large unknown orbiting objects.