Logical by Cethin
A game about tricking sand into thinking.
Complete Playthough (If the video doesn't play try clicking the YouTube icon in the bottom right of the window): https://www.youtube.com/watch?v=78JS9Prd-Jc&feature=youtu.be
Screenshots contain spoilers!

| Youtube | https://github.com/Cethin/Logical |
| Youtube | https://cethinn.itch.io/logical |
| Original URL | https://ldjam.com/events/ludum-dare/45/logical |
Ratings
| Overall | 323th | 3.239⭐ | 25🧑⚖️ |
| Fun | 206th | 3.326⭐ | 25🧑⚖️ |
| Innovation | 230th | 3.326⭐ | 25🧑⚖️ |
| Theme | 335th | 3.13⭐ | 25🧑⚖️ |
| Graphics | 457th | 2.391⭐ | 25🧑⚖️ |
| Audio | 347th | 2.381⭐ | 23🧑⚖️ |
| Humor | 358th | 2⭐ | 23🧑⚖️ |
| Mood | 469th | 2.182⭐ | 24🧑⚖️ |
| Given | 20🗳️ | 21🗨️ |
@snufkinshat I believe that's a LD issue. It loads if you click the YouTube button on the bottom right of the embedded window.
On another note, the controls seem a little shaky and it is sometime unclear what I'm supposed to be doing. For example, one level has a gate that says "OR," but it only had one input and no outputs.
And then I'm confused as to why I'm unlocking gates when I already have a NAND... I'll just keep solving everything with NANDs... This is how you're supposed to build a Full-Adder, right? =)

Edit: I count 22 NANDs in your Full-Adder solution and 15 in mine (plus one that I didn't need and couldn't delete...). That was fun!
Edit the second: The internet claims the optimal solution is just 9 NAND gates, I admit defeat.
Or maybe that's just my brain.
Other than that it's a great idea that fits the theme in a unique way.
Otherwise a good logic puzzle game where you have to take a seat and do your best to solve it.