Feel free to disagree with this assessment! (same as posted in the WIKI WEDNESDAY axe thread)
Arcade - The two arcade sections need a lot more commenting, and need images, Arcade needs an intro.
Atari - Only the Atari 800 has a games page, and it could use comments by people who aren't Mr. Apol. So that leaves VCS, Jaguar, and Lynx to have pages done for.
Bandai - The WonderSwan section has only two games. Needs image
Commodore - The Commodore and Amiga pages could do with some pruning, I think. I just added everything from the threads, and some of those things are not necessarily recommended playing, but were posted for nostalgic value. I enough about their libraries to do that myself. And, like the 800, most of the comments are by the same person. The VIC-20, and CD32 are pageless. All need images, and intros
Home Computer - All PC pages, if they exist, need work. The IBM compatible one is serviceable, though. But it is, potentially, a huge category. All need images and intros, excluding the Speccy, PC, mac (though needs intro), and Beeb pages.
Microsoft - Do there need to be three XBox 360 pages? (360, live, indie)? The XBox, and 360 pages seem okay, but the downloadable games ones need work. All need images, and better intros.
NEC - PC88, and 98 are pageless. PCE page is started, but is pretty bare. PC 88/99 need pics.
Nintendo - The NES, and
GB sections're good. Virtual Boy is probably done. SNES, 64, GC, GBA need a bit more commenting. Wii, needs quite a bit of commenting. GBC needs a bit more research. I need to check exactly what games are compatible with what hardware. And I think it might be best merged in with the mono, because there's so much crossover. The DS is probably a bit out of date, but is pretty good.
Se~ga~ - Master System needs more comments, but is okay: needa an image. The Mega Drive and Dreamcast are almost fine, but need more introduction. Saturn needs more games!
SNK - Neo-Geo is better, but there should be more to add, and the Pocket is just a list at the moment. Needs an image, too.
Playstation sections seem okay, but need more comments. I guess the PS3, and PSP stuff is out of date.
ROM hacks etc. - is slowly coming along. needs an picture (though I'm not sure of what) The other 'sundries' (3DO, CD-i, Colecovision, Intellivision, Odyssey, Vectrex, Nuon (lol), GP32) are all pageless.
AND I guess we could add pages for phones, and the Ipad thing.