This hack fixes the two annoying, trial&error issues with the original game.
In this game there are two types of "heart frames", other contains magic shots but they both look identical, now the one with magic shots is green.
And secondly, now water currents are visible.
The "1x3" patch also updates the graphics to match up with the sequels.
Version 1.5 adds patch for PAL version, and source code.