Thanks for your entry!
Things that I think are good:
- SFX balance is on point, sounds are familiar and coherent, feels like a part of Flappy Bird multiverse haha.
- Graphics are stylized and good, like the blockiness and color palette.
- Controls feel appropriate and simple, as they should be. They are also communicated properly.
- Good UI that keep you focused on the core gameplay.
- Easy to replay.
Things that in my opinion could use some polish:
- UX stuff: bird moves very quickly and it is hard to time your "flaps", as it is hard to understand the 3D space from chosen perspective. As other commenters suggest — making the bird contain less space on the game screen can improve the feeling of movement and make it easier to aim. Also you can try and tweak the amplitude of the bird's vertical movement. Other rows of pillars distract from the main goal, I would suggest to use them more intensively from the start to "sell" the 3D aspect of the game better.
- Feels very hard to get scores. One wrongly timed SPACE button can ruin the run, no place for a mistake and I don't feel in control while playing. As if the placement of the pillars is more responsible for my score than skill. I had to grind for every point but could make it only to 11 pts.
- Game lacks some background music, which can support the experience.
- I would try to make something with overall visuals — as I said the stylization is good, but the same empty background with checkers make it feel a little bit repeatative.
Overall:
Nice concept and good implementation of the core. With some polish and attention to some UX problems can be even more fun and captivating experience. Good entry!