I don't really use .rar files for anything these days, so I had to download a program just to extract it. Please consider .zip instead for Windows builds.
The visuals look amazing for a three-hour project! The style is warm and pleasant to look at, and it's impressive to make a 3D game so quickly. I couldn't really understand what the enemies were supposed to be, but everything else looked so good I didn't mind.
On the gameplay side, I found the mouse movement disorienting. The sensitivity was way too high for my taste (though different people have different preferences) and both the vertical and horizontal axes felt inverted from what I expected. The Y-axis can go either way in 3D for different games, but the X-axis definitely felt weird.
It would be nice if instead of hitting a button to view the inventory, that information could be listed on the Missions tab along with the amount needed.
After a few tries, I was able to gather some resources and build a boat. Hooray!