I really love the color choice. Sticking to very few colors gives the game a very distinctive look and feel.
I wasn’t entirely sure what the bar on top nor the one below signified. At the end I’m still not sure what the bottom is, but I’m guessing the top one was “health”. So there might have been some indication of when the next wave was coming, but I didn’t understand it. At any rate, it would have been nice with some indication. It doesn’t have to be an exact countdown but something that indicated it would happen soon.
There were some numbers in the corner, but these weren’t explained.
I noticed I could clip through walls by repeatedly pressing forward against them, which allowed me to get outside the map at one point. I got the feel that it was easier to succeed at this by not facing the wall and strafing through it.
I think I also placed a spike trap without a wall but placing the spikes on the core. I was kind of expecting enemies to come from all directions, but they seems to mostly come from one direction.
The controls worked well and camera perspective looked good to me. Perhaps I would have liked the movement to be a bit faster though.
The idea of gathering resources to tower defend the core was really neat, but I think I would have liked some area awareness around the core to assist me, i.e. a little minimap that is always centered on the core and shows enemies approaching and preferably traps. I think that even if that would make the game easier in a sense, it would elevate the immersion as right now there was no strong feedback when anything was approaching or attacking the core. It ought to be screaming and making all sorts of visual effects on the screen so that I come and protect it.
At one point it felt like I pressed a button and teleported to the core, or some other core because it felt like the world looked differently. Perhaps I was just confused, and then there was a countdown and I got teleported back to the original core. Or so it seemed. Not at all sure what happened there.
All things considered, a solid entry.
Playthrough: https://youtu.be/OIS6nATzNF0