Awesome entry! I spent quite some time fiddling around and had good fun! Some things I noticed:

• Would have liked a keybind for Target/Clear all
• More interaction while playing, maybe more movement abilities, currently I simply circle the enemy ships, I didn't feel like I could do much in terms of evading incoming shots.
• You can never have enough different block types :D
• Not sure about the Tactical pause. Certainly depends on your vision, without that the game would be a lot more action focused. Then again, one can simply choose to not use it.
• Show the health of modules which are not at 100% without hovering over them. (Maybe only while paused?)
• At some point the move controls got very unresponsive and I wasn't able to steer/accelerate properly anymore. Pretty sure it was because of my ships size, some kind of engine power to size ratio in the UI might have helped.
• I found the "static" layer of stars that follow your ships every movement kind disorienting. The ones behind, which create the parallax effect were great though.

I could actually see me play a few rounds of this here and there outside of the jam, good job! :)

Well this was definitely a unique one amongst the jam games, and really sucked me in to play a lot of it.  Though it definitely got monotonous after a little bit since I ended up with a behemoth of a ship with just endless turrets and everything.  I do think it wasn't supposed be actually usable though since the turning and straight directional movement stopped working, but diagonals still did (good ol' annoying diagonals).

A few points though to be more specific:

• The base systems are great so much variety, you can make enemy ships with it obviously, and change up the players ship to fight in different ways.  Focus on front defense and speed or all round defense etc..
• A big problem for me though was the monotony of it, since you run out of new blocks relatively fast.  Not to mention there's really not too much interaction with the game directly since you're just moving and targeting stuff.  Or just tanking sometimes.  So more blocks types (obviously) would probably be a welcome change (but it's a jam game sooo) 1 or so per level probably.
• Another thing is the fact that there's not really any landmarks besides the main portal.  They would definitely help spice up the gameplay, maybe some asteroids, or an enemy base or two?  Planets maybe but then I feel like they'd need a bit more variation, whereas asteroids are simpler.
• I feel like it's the same point but enemy variety was also a bit lacking, obviously a jam game but I figured I should mention it, though they did seem like they tried to have some interesting setups so maybe that's more down to the incredibly broken ship I put together.  

Alright well, now that I've nitpicked.  This game is coool!  There's some awesome ideas and some awesome execution, just with some variety missing in my opinion.  I'll definitely be coming back for any sort of post patch tho.

Great game!

Attaching more modules and growing my ship was super satisfying. I got a little carried away, and ended up with a turret behemoth w/o engine modules, haha

I bet writing code to manage all the modules was tricky, very impressive for a game jam

My most favourite game from the jam! Just well done. Like everything, from graphics to gameplay and fits the theme perfectly! really crazy to think this was done by 1 person? Wow just wow..

Great game! it is definitely challenging. I like how you can strategically rotation yourself to provide protection for your ship, super cool mechanic!