Pretty good! I like my sudoku, I uh, well I have a fairly neutral opinion on cubes but they're alright too.
Now I don't know if this disqualifies me from not being on the "do not resuscitate" list or what but I just did not figure out how to use the red and blue pens. You'd click a pen, click a cell, click a number then nada. Probably on me. Still, something to keep in mind, making some sockpuppet presentations to help your less gifted players.
Good apart from that, though!