That was an extremely good idea. Kudos.
 Please keep the 1 sec timeline switch in future jams.

A few suggestions.
Add coyote time when going off cliffs.
Make character physics a tad floatier.
Make viewing alternate timelines a toggle maybe?
Make outline of main timeline more visible.

Fun game. Did you use Godot?

Supercool mechanic but the level design or controls don't feel optimal for it.  Unsure which is were I feel the problem is as the jumping feels off. 

Really cool idea! I love being able to preview the other timeline. I had a hard time getting past the second platform, but I would love to see what other clever things you could do with this.

You can walk under water if you fall in the first pool. Is this a feature? xd

Pretty cool concept, tough game. I'd like to see what other ideas you can come up with for this. Lots of potential! Nice work!

The platforming is a bit too precise, and the jump seems a bit too fast (both going up and coming down), but other than that, this is a neat game. I particularly enjoy how the time you have left in the other timeline is visualized.

The "view other timeline" feature was implemented very well. Felt very polished and definitely helped me beat the game. I feel like a slower jump would've also helped make the platforming a little more forgiving. Still a great job!

----------

Hey, we made a GMTK game too. Check it out!

I fell into the water on the first jump and the character was able to move below the screen. I couldn't come back and didn't know where I was :-D.

Nice idea, well done!

Hard, but cool concept.

Great idea but execution was not very good. I know how hard game-jams are, but man could this have become a great game!

Very hard game, I confused view and change buttons all the time (maybe just show the alternate timeline all the time?). I liked how responsive and fast it felt. Very good game overall!

Too hard for me, but pretty cool concept!

I like the gameplay mechanic of seeing/switching to different timelines; it's pretty creative! The pixel art is also very nicely drawn. I am thoroughly impressed that this is your first attempt! Great job! :)

Landing on that small platform was a bit frustrating, and the level not restarting when you fall into the water is kind of annoying, but I really liked the concept. Nice game overall :)

Very hard (didn't make it far) but pretty nice concept !

It's a great concept and idea. It was quite hard and took me quite while to figure it out. I also don't get why you don't die when you drop into the water. But that's just me nittpicking, overall a fun game to play, you did a great job!

Nice game) It seems a bit hard but I beat it after all. The button that shows you alternate timeline is a great design decicsion. But I don't quite get how is it relevant to the theme in gameplay. For me it's just a platformer with changing environment. Good luck!)

I can't play but I like the Idea of the game. There is an error message "abort(114). Build with -s ASSERTIONS=1 for more info.". But I still will give you a good rating for the Idea.

I. Love. It.I urge you to continue working on it!