This may seem unhinged, but it was for a grade and I decided to put a creative twist on it! WASD to move Mario Arrow keys to control Luigi M and N are their attacks. Collect coins and don't fall into the pits! Also, the Goombas, Super Stars and Red Mushrooms don't work. You can also enter "Editor" by pressing zero and then the number keys to edit the level.
Credit to @griffpatch for the tutorials and sprites.