One of those 'make the game easier' mods.
One of the biggest problems I run into with Spelunky is that I just don't have the patience to slog through
ALL
SIXTEEN
FLOORS.
It's remarkably long for how unforgiving it is! So what have I done here? Well...

I dropped one level off each of the first three areas. Just one. So now, there are only three caves, only three jungles, and only three ice levels. It makes things both easier and harder.
It's easier because there are less levels you have to survive through. It also keeps things more interesting because you spend less time in those boring mines. But it's harder because you have less time to gather resources, which can make certain tasks (like buying the Ankh) more troublesome. It's also harder to set big records!
Anyway, give it a whirl if you're tired of Spelunky's early levels taking so long.
Short SpelunkyI'll only make the source available if someone really, REALLY wants it. It's no different than Spelunky 1.2's current source aside from the numbers I changed to make the game shorter.