You did a great job so far with your game!
I was playing with a friend of mine and i wanted to hignlight some problems and bug i saw.
There is a block type missing : the inner one.Indeed, if we place a prism block and if we want to place an inner block under it, it appears there is a hole we cannot fix with any block type existing yet.
I want to add that the texture is not well applied on the main side of the prism block
Furthermore, the look a prism block has before we place it if it is reverse is not the final look we get, it's 90 ° wrong.
Have a nice day, fellow builders and developers