GameSpy
- Review, previews, screenshots, and movies.
- http://psp.gamespy.com/playstation-portable/gradius-portable/index.html

GameZone
- Preview, by Louis Bedigian: "Gradius Collection is the perfect way to break into the series." [Score: 8 out of 10]
- http://psp.gamezone.com/gzreviews/r28632.htm

IGN
- Reviews, previews, news, screenshots, videos, and a message board.
- http://psp.ign.com/objects/780/780075.html

GameSpot
- Reviews, news, previews, images, videos, cheats, links, and a forum.
- http://www.gamespot.com/psp/action/gradiusportable/

GameFAQs
- Release data, cheats, and a message board.
- http://www.gamefaqs.com/portable/psp/data/930702.html