GameSpy - Review
- Review, by Benjamin Turner: "In an eggshell, Billy Hatcher and the Giant Egg is worth checking out for platform and Sonic Team fans, but is likely too difficult and glitchy for more casual players." [Score 3 out of 5 Stars]
- http://cube.gamespy.com/gamecube/billy-hatcher-and-the-giant-egg/6203p1.html

GameSpy - Preview
- Preview, by Benjamin Turner: "Have no doubt: I'm quite looking forward to playing the final version of Billy Hatcher and the Giant Egg."
- http://cube.gamespy.com/gamecube/billy-hatcher-and-the-giant-egg/6104p1.html

FiringSquad - Review
- Review, by Marcus Yam: "Although there are parallels to Mario Sunshine, Billy Hatcher and the Giant Egg is a highly original game" [Score: 70%]
- http://www.firingsquad.com/games/billy_hatcher_review/

WarCry
- Review by six-year old. Includes screen shots.
- http://www.warcry.com/scripts/news/view_news.phtml?site=15&id=12256

GamingAge - Review
- Review, by Brian Peterson: "One thing that does help Billy Hatcher out from complete mediocrity is the multiplayer mode." [Grade: C+]
- http://www.gaming-age.com/cgi-bin/reviews/review.pl?sys=gamecube&game=billyhatcher

The Laser - Review
- Review, by Michael Palisano: "The game is solidly constructed, surprisingly challenging and lots of fun." [Grade: B+]
- http://www.the-laser.com/billyhatcher.htm

GamingWorld X - Review
- Review, by John Luedtke: "The experience of Billy Hatcher can be summed up in one word: underachieving." [Score: 6.0 out of 10]
- http://www.gamingworldx.com/gcn/BillyHatcherandtheGiantEgg.shtml

GameSpot - Review
- Review, by Ryan Davis: "Save for the peculiar mechanics of the giant eggs, it falls back on standard 3D platforming mechanics more often than not." [Score: 6.7 out of 10]
- http://www.gamespot.com/gamecube/action/billyhatcherandgiantegg/review.html

GameZone - Review
- Review, by Louis Bedigan: "Billy Hatcher is an addictive platformer for anyone who loves Super Monkey Ball." [Score: 7.8 out of 10]
- http://gamecube.gamezone.com/gzreviews/r21911.htm

Armchair Empire - Review
- Review, by Omni: "Billy Hatcher may never catch on as a marquee Sega character, but his debut is a somewhat fun game on the cartoony side of weird." [Score: 7.9 out of 10]
- http://www.armchairempire.com/Reviews/GameCube/billy-hatcher-giant-egg.htm