Interesting concept - you could make some interesting games with a few variations, like making the portals horizontal instead of vertical, or giving the player a choice of more portals to go through. The sounds are really nice.

I liked the idea of the portals as movement - very creative! I wish it was easier to tell where the asteroids were in relation to your ship. I noticed myself getting addicted all the same though, so good job!

Really good work. I think a little background music could have been great but I love how this thing fit into the theme.

Very challenging, very fun :>

Very fun , love the implementation.

I like how the particles of the portal move when you move, if you're going left they go right, if you go right they go left. It's subtle but I liked it!

A nice funny gameplay. It matches the theme perfectly.

Not easy through :)

As I wrote already in the other comments on you page: very challenging! good work! Is fun!

Nice game, very unique concept!