Mine is here, no one has rate yet :(
https://itch.io/jam/gmtk-2019/rate/462824
Cyan is a little puzzle / platform where you have only one "powerup", an hamburger that make you bigger! But also with pros and cons.. And, also, the only color is cyan blue :D
(In the meanwhile I'm trying and rate all the games in this thread, how many great puzzle!!)

My puzzle game

https://itch.io/jam/gmtk-2019/rate/463365

A robot puzzler where you can only use each input command once! Last level's a toughie, please let me know if you beat it!

https://itch.io/jam/gmtk-2019/rate/463424#post-854130

I'm calling my game a puzzle platformer since it seems like a platformer, but you can only press each direction once per stage. It's called Broken Robot and I think that having to plan out your movements in the game makes it a type of puzzle game.

https://itch.io/jam/gmtk-2019/rate/462219

Airship Adventure - A short game of aviation

https://itch.io/jam/gmtk-2019/rate/463701

I also made a puzzler! Mine's a crafting game where you try and craft your way down to only one item rather than craft your way up to a lot of them a la Minecraft or whatever: https://itch.io/jam/gmtk-2019/rate/463986

I'm gonna check yours out rn too :)

Our game is puzzle-ish, but I promise, you will have fun :D Our whole love to game development and flamingos is right below : )
https://aramilion.itch.io/flamigos

We took some loong time to find out what we should do, but indeed we ended with a puzzle game. An horrific/memory training puzzle game, to be more precise :)

There it is: https://weslito.itch.io/void

I tested you game too, I do love programming games, and this one is very funny, good job!

Take a look at mine! https://itch.io/jam/gmtk-2019/rate/463426

Made my first puzzle game. Its minimal and there are about 14 levels but the fun picks up at level 6.

https://itch.io/jam/gmtk-2019/rate/463610

Enjoy :)

I did!  An action puzzle game hybrid thingy; let me know what you think!  https://itch.io/jam/gmtk-2019/rate/462325

We made! its like these games where u roll a stone to another point, but with different mechanics. See there and leave your sincere critic. 
https://czarsilvestrini.itch.io/snake-charmer-the-sir-pent

I guess mine could be considered a puzzle game with too much imagination required :D

It's called: One Dimension  I would love to hear your feedback

My game is called Echolocation. It's a top-down puzzler where you can only use your hearing to navigate the levels. Watch out, it's super hard :)

I made a 'one cube' puzzle game! (make sure to go to link in the comment for an html version). https://itch.io/jam/gmtk-2019/rate/463326

Another puzzle game :)
https://kneehatgames.itch.io/orbitone

Here! https://itch.io/jam/gmtk-2019/rate/461728

Ours is a puzzle platformer where you get one jump. It starts off pretty simple, but really starts to ramp up after my favorite mechanic is added - switched/2 state blocks! Level 7 is broken (which is a shame because it was my favorite puzzle). Apologies about that, but you should be able to glitch through it.

I'm really proud of everything else and would be happy if you guys would play it and give it a rating! :D

Hi guys. I made a physics based puzzle game. You have one shot and need to avoid the obstacles. The downloadable version has much better graphics than the browser version.

https://itch.io/jam/gmtk-2019/rate/461837

https://itch.io/jam/gmtk-2019/rate/461074  Mines a 3D action puzzle game. You control a crowd that all move at the same time, you need to get at least one survivor past a horde of zombies blocking the road, which is harder than it sounds. It's only 5 levels, but as I was making it I began to come up with a ton of new mechanics I could add for new kinda puzzles so I plan to expand on this one once I finish my current project, really looking forward to it.

Hi This is my GMTK game. Hopes your likes and Rating.

https://beaverjoe.itch.io/the-only

Mine is an action* puzzler where you can only press each directional button one time and you have to reach the goal.
Not many people have rated it yet so i'd appreciate plays and feedback. :)
P.S. Its windows
https://dubtuff64.itch.io/only-once

We also made a puzzle game! 

You play as Juan, the Jelly Knight who can absorb colored bullets from enemies to gain their properties shoot them back!

The game follows 3 simple rules:

1. Each color has one weakness against another color Blue > Red > Green > Blue

2.  If a bullet and character share colors, they negate each other and the character blocks the attack. 

3. If a bullet hits a character and the latter has the stronger color, the bullet is reflected.

Bullets also bounce against walls, so be on the look for incoming attacks!

If you think you have the courage & wits to help the Juan and Only Jelly Knight recover his human form, the challenge awaits you.

Don't forget to rate the game here! (You can play the game in your browser, or download a Windows/Mac build).

Reply to this post with your game link and I will also play/rate it!

Thanks for playing!

Yes! We made a puzzle board game called Einnsámr and it turned out really well :) https://itch.io/jam/gmtk-2019/rate/463168#post-861306

Here's my puzzle game: https://itch.io/jam/gmtk-2019/rate/461880

It's a game where you solve puzzles with only one light from your magical wizard staff

We made a small puzzle game about a bunch of "heroes" wich need to work together to reach the exit.

https://itch.io/jam/gmtk-2019/rate/461977