Tortuga is a board game by Vincent Everaert: http://vincent.everaert.perso.sfr.fr
My cousin got it for easter and we played it a lot. I created an online version to learn Unity (made this a while back) and to keep playing.

I used a lot of third party assets:

 

I created a custom navigation mesh pathfinding that can handle huge amounts of units almost simultaneously. This is a log of the many revisions I did.

 

Another exercise project: A collection of spline functions for Unity.