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Rockman & Crystal, called Battle Network Rockman Crystal on the title screen and Zook Man ZX4 (路克人ZX4) in Taiwan, is a Game Boy Advance game by Vast Fame and the third known game in their Zook series. It is loosely based on the Mega Man X / Rockman X games.


This game is considerably hard, due to your small health bar and bosses needing to take a significant number of hits to take damage (however, power-ups and health tanks are still fairly common item drops.) The game spans eight levels including an intro stage and a final boss rush. There's no real ending to the game; after the last boss in the boss rush level is defeated the game immediately cuts to the credits. Several enemies are taken from Mega Man X / Rockman X and Mega Man 8 / Rockman 8, with the bosses being either recycled from previous Zook Hero games or being edits from other official Mega Man / Rockman games. The main character's design is based off of the first game except he has green hair and a headband.


Main article: Rockman & Crystal/gallery


Zook Man ZX4 Unused Copyright

Vast Fame copyright notice in Rockman & Crystal / Zook Man ZX4 (unused).

  • The bosses, enemies and the floor of some stages are mostly taken from Mega Man X / Rockman X, Mega Man 8 / Rockman 8, various other Rockman games, and even bosses from previous Zook Hero games (the Mechanical T-Rex sub-boss and Abandoned Armored Robot boss show up in the game.)
  • The Zero-like character who appears in the title screen and the credits, is called Midoll (米多爾), or Meduoer in the English version, and only appears in-game as the boss of the intro stage.
  • A good chunk of the music used in the game are remixes of songs found in Super Fighter 2001 Alpha although there are new original compositions made for the game.
  • An alternate Chinese release of the game, Luoke Ren Dazhan - Shuijing Ban (洛克人大戰 - 水晶版), was released by Kongfeng in mainland China. The only known difference between this version and the original Chinese version is the title screen using a unique logo for the new name. It is unknown if the game has any other differences.
    • This version's name roughly translates to "Rockman Great Battle - Crystal Edition" in English. This is possibly the origin of the names used for the English version (Rockman & Crystal and Battle Network Rockman Crystal). It is unknown how the Battle Network name ended up being used in the name on the English version's title screen.
  • Although they are never used, the game's ROM contains two sets of tile graphics containing Vast Fame's logo. The first one is for a 2003 copyright notice explicitly crediting Vast Fame by their Chinese name and features a small version of their logo. The second set of tiles is for a larger graphic of Vast Fame's logo and Chinese name (廣譽科技), likely intended to be used as a splash screen like in Vast Fame's self-credited Game Boy Color releases. The presence of these graphics confirm Vast Fame as the developers of this game.
  • For a time, this game was unofficially referred to as Zook Hero 3 on the English-speaking internet due to it being the third known Zook game by Vast Fame. Coincidentally, unlicensed game developer and publisher Sintax would release their own entry in the Zook series in 2004 that uses the English name Zook Hero 3. Due to Sintax having known connections to Vast Fame (i.e., Sintax using one of their sound engines in their own Game Boy Advance games), this entry was possibly authorized by Vast Fame. Unlike Vast Fame's Zook games, Sintax's Zook Hero 3 is very obscure even in the bootleg/unlicensed games community, in part due to both the Taiwanese and mainland Chinese (SUPER洛克人) releases being extremely rare and its lack of documentation. The game would only be dumped publicly for the first time in 2024, albeit as a cracked ROM that runs in most emulators.
  • The English release seems to have slightly different instrumentation for its music than the original Chinese release's.