This is a very cool space game! I really like the pixel art, especially the blackhole, it kinda reminds me of Gargantua from interstellar so that's very cool! I liked how the black holes dragged you in which was a neat mechanic. All the core mechanics were very well done considering the time frame.
Some critiques I had:
I don't know how long this game is or if it's an endless game but I think this game can be improved with more variety such as more enemy types and more frequent encounters.
This game will also benefit from background space ambience music
If the upgrades were tied to the enemy kills that would be great addition
These are just small critiques for after the game jam, considering the time frame this is an amazing game jam entry!
Viewing post in Universe: The Trailblaze jam comments
Hey Pikachu! Thanks for replying. The idea is to be an infinite Game, but considering the time box, I had no chopice but to repeat some enemies, but now the Jam is done, I could use some spare time to improve the game. About the powerups, the intended gameplay is to a powerup appear reandomly after 3 waves beaten, but I forget the cheats on hehehehe