I wrote a review of Space Walk (in Finnish). I gave it two stars (mediocre), but found nothing wrong in it. It’s a nice little Mancala variant with some neat twists and a rather solid basic movement mechanic, but how long it can entertain you is another thing. It’s a good game for the whole family, so if you see it cheap somewhere, my recommendation is to buy it. I wouldn’t, however, see the trouble of especially hunting it down.