Nintendo:Official site of the GBC version. Includes support FAQs, screen shots, game features, a short review, and a strategy guide.
All-Reviews.com: [4/4] Review of GBC version by Tom Allen. "...you must get this game, even if it means buying a Game Boy Color just to play it."
Cheat Code Central: Features Game Shark codes.
GameFAQs: Includes links to walkthroughs, FAQs, maps, and Game Shark codes.
IGN.com: [8/10] Review of the GBC version by Craig Harris. Offers screen shots and link to game help. "I really enjoyed playing Crystalis, but Zelda trounces it left and right."