3 Additional Basic Tiles, expanding upon those shared by Zack.
K Tile - funnels all top input channels into either the left or right output channel (depending on orientation). Limited to two orientations.
yr Tile - smoothly directs top and one side input channel to the output channel on the same side, while the opposite side input channel gets directed to the center output channel. Limited to two orientations to work properly.
3E Tile - this tile is similar to the yr Tile, but is more forgiving in orientations, at the cost (benefit?) of being more chaotic. Instead of having one-way channels from the sides, this variant is mirrored vertically, so there are 4 possible orientations, though 2 are duplicates of the other two. However, this means that the "other side" input channel could potentially output to either middle or it's same side channel.
_Now includes versions compatible with Zack's Secret Tiles Cover (cover not included in my files, can be found in Zack's files) _
NOTE: I have not tested these at this time, but they are generated directly from Zack's basic models, so I think they should be pretty solid contenders. I still need to get my printer back in a working state so I can print out a board to play this game myself.
Remix of Hextraction Basic Tiles by ZackFreedman