I liked the visual perspective of this game! 3D-top down looks good! I liked that you included a screen-edge marker for the forge! I also liked the way of purchasing upgrade, by walking into the structures. Music and SFX was rad too!
I had hope to build more upgrades, but halfway through the game I thought the asteroids stopped spawning. I followed asteroids edge marker to the end of the map, but there didn't seem to be any in the indicated direction. On my way back, a stray asteroid hit Earth.