Tickety has a picture of a schoolhouse she drew on a piece of paper, but after you find the red crayon and the clue, when you click on her again afterward, her picture disappears.
Whenever Steve gets ready to draw the clue in the notebook, he always flips the notebook to the very first page. He never flips the other blank pages, so he wouldn't literally have any room in the first blank page to draw all the clues obviously.
When Steve gets the crayon out of his notebook, the notebook's spiral still looks like the crayon is in there but in the next shot when Steve shows the viewers the clue he drew, the spiral is empty.
At the beginning of the game, Steve says he better get dressed. However, he remains in his normal clothes.
Cash Register doesn't have any of his arms in this entire game, like he does in the TV series.