I had a tremendous amount of fun with 10000000. It worked as a fun little joke about upgrading EVERYTHING, it's got a zippy little feeling to play, and not a pixel onscreen in wasted.

And... even though once I beat it I wished there was another level, I found it refreshing that it simply ended and I got to watch the credits like an old NES game.

I knew nothing about the guy's story, so this was kind of heartwarming.