Hello! I played a few runs of your game and I have some feedback!
- Are the upgrades completely random when they spawn? From the few runs I did that's how they felt. I found none on my first two runs, which I think my high score was somewhere around 700 maybe, but then on my third run I found two really quickly, and that went on to be my best run at 4519.
- If they are completely random, maybe consider making it so they're a bit more evenly spaced out? They seem pretty necessary to do well.
- I think some of the other comments are being a bit unkind about the theme not being there, when you right click you're clearly spinning your gun around in the air to fly, and that's like the main mechanic. You also seem to spin back down into the saddle when you press down. I think you did well here!
- I'm not sure how many different upgrades are available, in my runs I only found health up, speed up, and bullet pierce. I didn't really see the importance of speed up? Does it change how fast you can spin to move up and slam down? Or just your left/right movement? If it's left/right it doesn't seem all that important, you mostly dodge by slamming back down into the saddle.
- It would be nice to have the game track your high score and display it on the main menu!
- Another commenter brought up the music, and I have to agree, it's probably the weakest part of the game. The music on the title screen seemed like it had a longer loop than the music in the actual gameplay part. However, both loops do get a bit tedious after a time.
- I'm sure this was due to the time constraint for the Jam but the enemy variety seems low. I think I only saw 3, the fire, the cactus, and the laser eye cowboy. That's understandable, you only had a week, but it also seems like the cactus is the only one who can hit you if you don't jump/float? You obviously don't gain score if you don't shoot anything, but maybe if the other enemies sometimes lowered so you had to float to dodge them it could be a bit more engaging? That might force you to take damage though if you're already floating and need to slam down. I'm not sure, but it's an observation!
- Actually, I just did another test and it seems like you could theoretically get an infinite score if a cactus spawns in just because you gain points for destroying their projectiles which are pretty slow, and none of the other enemies can hit you if you don't jump?
- Why can the horse jump? I mean, I know real life horses can jump, but, since you're mostly floating with the revolver I didn't really see a point to jumping? Maybe sometimes have pits your horse has to jump over?
All the enemies fly anyway,and you can make your horse jump when you're already in the air.- I thought all the enemies flew but I noticed some are on horses when I inserted the screenshot below.
- Making it so you have to jump sometimes would help fix the cactus exploit I found, since you would occasionally have to put yourself in harms way.
- The pixel sizes on different art assets seems inconsistent. Your big spires in the background have really large pixels, but the dirt in the foreground has pretty tiny pixels. I think having this pretty even across the board might make your game look more put together!
Anyway, I thought it was a fun game! I hope my points didn't come off too negative, I'm trying to offer constructive criticism to help the game improve! Here's my best real score:

...and here's my score when testing the cactus exploit I found:

(That could have went much higher I think, was just trying to see if anything would change to make it not work anymore, and nothing seemed to)
Have a wonderful day and good luck in the Jam!