I don't normally do this, but don't change the Dart puzzle.

[Tasty Brattwurst]

Normally I am a champion for a community when it suggests that a puzzle is too problematic. The whole point of this game however is to listen to what the house is telling you.

When you present the puzzle, you show addition first, then subtraction, then multiplication, showing the player the order in which it should be applied - it is going from the centre in. People who have had PEDMAS and BODMAS drilled in them think it's wrong, but it's not about that, it's about logical steps and leaps of logic, that have math applied to them.

I am a giant maths nerd, but I am also a logician. I loved the puzzle as it is. Teaching players to get out of their rigid thinking is probably a good idea given the other contents of the game.

(Also most of these people would have then got a solution which was greater than 20, which should have immediately clued them in that the answer was incorrect).

[Ｈｅｎｋｅ３７]

I concur, the puzzle is fine, with the exception of color blindness.