Wow, how'd I miss this? 
It looks great Michael!

Well, coding is going along slowly, in fits and starts, but progress is being made.
I think I have a plot, and I want to run it through the forum to see what you guys think.

You control a villain (whose name, btw, is Harlequin) who lives in a lair in the depths of a maze.  Because you are a villain (and a particularly nasty one, to boot), your maze is perpetually flooded with would-be heroes attempting to confront you.  As a result, you're kept quite busy running about, resetting traps, killing tenacious heroes, etc.

One day, you were foiling heroes, as usual, when you accidentally triggered your own trap, which caused all of your equipment and stuff to scatter about, and more importantly, caused you to lose the all-important map of the maze, leaving you completely, totally, and utterly lost.  Which sucks for you.

The purpose of the game is to go around collecting equipment from treasure chests, rearming (and avoiding) traps, killing heroes you encounter, recovering map pieces, solving puzzles by pressing buttons that open/shut pathways/doors, and attempting to convince henchmen that you are, in fact, Harlequin, and not some impostor.

Ooh nice, I like the idea, because it is not just the typical "A vilain with OVER 9000! magic powerz is threatening the kingdom and you must save the world" story style, which can be good, too, but different stuff is nice, sometimes. One thing I wonder, though: will there be NPCs and some form of shops or something to upgrade your equipment and to get clues?

Also I'll probably create a sub-forum for this later, unless Hot Dog beats me to it.

Thanks!
I think I'll add interaction with various henchmen, as either sources of dialogue or to buy and sell stuff.  (Pretty degrading stuff for a supervillain to stoop to,having to buy equipment from your own henchmen, lol)

Awesome!  Looks great!

Worked fine on an emulated TI-84+.  The source is included though, so you could always just fix it yourself

It's kind of like this screenshot in Sprite Helpers

It's not your program, it's that grayscale messes up in Full mode.
(And in the link, look at the post just below the screenshots)

By the way that's awesome! I wonder if you should make the character move every 2 pixel or something so it is faster?

Well, that's actually what it's doing.  Every time I move, the calculator starts crunching where to add the shadows two pixels later, but interrupts halfway through to display an intermediate circle position without rendering new shadows.  Which is why the shadows are a little choppy but the circle isn't.