I really liked the spin on Asteroids - I think this is a very innovative take on an absolute classic. Calling it BLAsteroids is also very clever. I found the gameplay to be quite challenging and a couple of times I would have liked to go full-screen as my mouse was leaving the game! That said this is very addictive and a cool way to spend time - I reckon that this game would work super well on mobile if you haven't already thought of that - could be pretty viral on that platform so I hope you have plans to port it over :) nice work team.
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which engine are you using? I use Unity and while not perfect it does a decent job of maintaining positioning of your game objects at varying resolutions (it's not perfect but it's good enough). For mobile I can definitely see using a finger pull motion to fire the asteroids as being a very intuitive feature/mechanic. I'm sure this would do so well on mobile.