Handles very nice, Fast and good jump height, Doesn't feel limited. The only bug i found was jumping from the high platform onto the bricks i got stuck in them, But there's a reset option so no problem. It's a nice colourful style too, I look forward to seeing what you do with this

Edit: I since tried to recreate the glitch jumping on the bricks but couldn't, But got stuck in the normal ground a few times, I think it's something to do with jumping from the very highest platform while also moving left or right, Not just dropping straight down. Maybe the increased falling momentum

Good, but would be good to increase the character's deacceleration

The physics feel great so far! There is a bug with the collision test UI where it will only update from yes or no if the character moves in that direction, so for example touching a wall to your right will set it to yes, but moving to the left away from it will keep it at yes until you move right again. Probably only a bug with the UI though, collision doesn't seem to be affected by it! Can't wait to see your progress with this game!! :)

Bug: fell under the surface and got stuck. Pixel style FTW.

EDIT: Yes, big jump from the highest platform beforehand.

Don't post your barely started prototype online cuz you're just asking to get bad reviews.

Anyways I like the graphics, it's good for a Pico game so there's that. I really got nothing else to say about the game.

If you want my opinion on what this game should need, it could use a timed mechanic where you'd need to get to the next level before being caught by spikes or lava. I've seen some games use this, but there was no game centered around that game mechanic.
That wouldn't work if your game is trying to be Jump King like the description implies, but if the character "falls" by dying to an enemy or a trap then it's def a good idea to consider.