nice sounds and the context of a space shooter with no violence is really cool, but the game dont have a score and a restart button

This looks like a decent game, perhaps too difficult for my skill. This wouldn't be much of a problem -- I don't mind restarting and trying again -- but I can't find any way to! Do I really have to *refresh the page* every time I want to retry? Or is there a restart button that the game doesn't tell me about? Either way, it's irritating not to have an easy way to restart, e.g. by pressing Up again.

It's a reasonably good game, pretty challenging.

Although that one-hit instant kill quite annoys me. The enemies are fast, and even though you have a vague idea of what exactly killed you, you don't know for certain because the game immediately transitions to a Game Over screen – which you can't confirm to start a new game (!).
I'd show your ship exploding, just so you have a few more moments to notice what happened.
I don't know what's the point of even having levels when you can't restart a level and always start the game from the beginning. I don't know how long the game is, but what about three lives or restarting the game at the beginning of a level?

Also, for first time players, parts of the background might look like enemy missiles (especially the largest red star at the right).

Don't get me wrong; it's a good game… just being stuck with Game Over screen after the very first mistake may be frustrating.
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