1UP: Preview, by Matt Leone: "While we got to try an Ape Escape game at the Tokyo Game Show, it wasn't the Ape Escape game we really wanted to play."
GameFAQs: Information and a message board.
GameSpot: Preview, by Ricardo Torres: "Based on what we played, Ape Escape PSP should capably fill what will likely be a gaping monkey-sized hole in the PSP's software."
GameSpy PSP: Offers information and screenshots.
GameSpy PSP: Review, by David Chapman: "Ape Escape: On the Loose does a good job of bringing the franchise to the PSP." [Score: 3.5 out of 10]
GamingMoz: Data, release dates, box art, and a message board.
IGN PSP: Preview, by Nix: "Even after playing the game, we're still left with a lot of questions as to how SCEA and SCEJ plan to pull this great one off on the PSP."