Nice shooty game!
Had an issue in webgl with UI covering the screen but if you go fullscreen it gets fixed.

Great adaptation of the theme! I thought it was tough to tell when the player is hit by the enemy projectiles and vice versa, but otherwise I really liked the graphics.

The bloom effect really helps the look of the game! I liked the concept of the player and enemies being this trail of colour changing squares, but I found it a bit hard to track my characters exact location when I needed to dodge enemy missiles.

The glowing colours look quite pretty! I found that my hit box wasn't very clear at all, because of how the particles move around randomly. This was similarly the case for bullets, where I'd sometimes get hit when I thought that I'd dodged. A brighter "core" that doesn't fluctuate in front of the flamey particles would probably help a lot with that.

I liked that there were upgrades between rounds.

Love the particle effects :D Nice upgrade system, it gets hard at levels 3+.
Some more UI like HP would be nice.

The fire, player, and enemies all look pretty cool! The upgrade system was nice, too, but I wished there were some sounds though. Otherwise, great game!

Using particle effects for all of your characters was a cool way to represent fire, but it was a bit hard to tell when your projectiles were hitting enemies, and when enemies hit you. It probably would have helped to have some sort of feedback (flashing, shaking, knockback, disruption of enemy particles, etc) when they get hit by your attacks, to help your attacks feel like they have more weight.

I didn't hear any audio on the webGL version, but saw that you have that category available for ratings - Was there audio that I missed?

I managed to beat levels 1, 2, and 3, but I got stuck on 4. It was great that you let players retry from whatever level they died on - I ended up playing way longer than I would have if I had to start over every time I died! :)

I thought the way you represent the HP was a cool idea. I wished I could use the arrow keys to shoot, since projectiles have a max range anyway.

The graphics look awesome, and the particle effects are super cool. I played in via the WebGL client. Some more player feedback (damage animation, visual cues) would have improved the immersion but otherwise an awesome job!!

Love the simple square particle style, it's cool to have all the characters represented that way. I would say the menu and UI is a bit plain, but it's a jam game so game-play comes first. Finally, The shooting felt a bit clunky, it would make sense if the projectile shot in a straight line to where you clicked but it follows your mouse slowly, but still fizzles out. Doesn't quite feel right.

Nice game. :)

Graphics are nice, simple but really great. Nice job with the FX.

The controls are correct. I didn't really notice a difference between the WebGL and the Windows build, but the game ran well on the WebGL build anyway. The only things are that I had no sound, neither in the WebGL nor the windows build and the option button did nothing.

The gameplay is correct, things are pretty intuitive. I couldn't beat the third or fourth level even after multiple attempts. It was a good idea to let the player retry from the last level.
Adding a way to use coal or reset how it's used after a gameover could help try different way of playing. I feel like it lacks a bit of feedback, reducing the size of entities is a really great idea, but adding a bit of screenshaking or anything else would help when you hit / get hit / when the flame is "under attack".

Anyway, great job there! o/

Great game! I really like the kind of minimalist graphics. The particle effects are great! Nice job.

Nice defender game. I would have liked there to be more clear hitboxes for player and enemies and some indication when you or enemy is hit. I liked the upgrade system, though it would have been nice to see somehow what you've upgraded in the upgrade menu. Sounds or music would have done much for the mood.