This is a little improve to certain graphic details in the game, very punctually in the sprites, the changes are as follows.
-Black line in the sprites of the playable character and other characters.
-Small graphic changes in certain enemies.
-That enemy that looks like a rabbit but that is not ...Well, now is changed to look like evil rabbits.
-Change of look for the final boss, now it has more human appearance instead of just being a black thing.
-Small changes in the skin of the princess, now it will not seem so much a princess Leia.
File name: Challenger (J) [!].nes
CRC32: 94339DFF
MD5: 835ECF22F6C5D1D80D5AA1DC57410009
SHA1: ACCEA2EC5216EC05090C2D15D3F373EB4A41472B