Sega Mega Drive

That box without a cover is my copy of Sonic the Hedgehog 2 from when I was a kid. The second video game I ever owned. The first video game that I owned is that copy of Sonic and Knuckles. The box actually belongs to another copy which I bought on ebay and kept the box and donated the second cart to the racketboy auction. Also not seen here, my first console, a Mega Drive II, which I still own but I didn't bother taking a picture of it.
PlayStation 2

Of all these games, with the exception of One Piece (anime fighter) and Sonic Mega Collection (retro compilation) I've only ever beaten Final Fantasy XII. I did get very close to beating Kingdom Hearts too though. I also own a copy of Yakuza 1 which I seem to have misplaced the case for (the disk was in my PS2 fat, I also own a PS2 slim), and that copy of Dark Chronicle (Dark Cloud 2 for you Americans) is still sealed.
PlayStation 3
Part 1:

Part 2:

I also own Infamous 2 and Little Big Planet 1, but I've lend them to a friend. You will also notice from a later picture I own the North American collector's edition box of Little Big Planet 2, yet here I have a European copy. I bought both copies, the American copy for the awesome collector's goodies (the European CE just sucked), and the EU copy to carry on my bought DLC from LBP1. Also I had forgotten I even owned Tekken Tag Tournament 2.
PlayStation

Perhaps the closest I've come to beating all the games I own for one console (beaten FF 8 and 9, still working on Megaman Legends 2)
Nintendo Wii
Part 1:

Part 2:

That second One Piece game is also sealed. One of my favorite consoles over the years, there are many awesome games I still want to buy for it but I never seem to get down to it. Also my second biggest collection of games after the PS3.
Nintendo Gamecube

Sad fact, I used to own around 15+ Gamecube games and they were AMAZING but then I started selling them and ended up keeping my favorite 3, even though I regret selling at least another 7-8 (among them Tales of Symphonia, which I sold at a VERY low price, around 25-30€)
Nintendo DS

I'm really sorry for the ultra shaken picture I really don't have a steady hand with light things (smartphone). Again I owned like 12-14 DS games, among them some true gems but I sold them, or in the case of Phoenix Wright 1 and Mario Kart DS, I forgot them inside a box which my mother threw away

Nintendo Game Boy

Missing from here are many games that I gave away to my little cousins which I don't really care for (cartridge only copies of pokemon, lucky luke ect.). I believe that with the exception of the Asterix game I have almost everything that I'd want from the gameboy library. (want to buy the 2 GBC Zelda games one day). I also owned around double the amount of games you see here back in the day, but trade offs, hands offs (and 2 cases of lending cartridges which I never got back) left me with far less games....to be fair I did get that copy of Zelda from a kid who moved away, forgot it with another kid, who then also moved away, making it a double-y stolen item

Nintendo Game Boy Advance

Another very shaken photo, I'm sorry. Though I think you can tell which games they are (that lone cartridge under the 3 Donkey Kong Country games is Riviera. I actually think I haven't sold off almost any games that I really liked on the GBA (with the exception of Final Fantasy Tactics Advance). Awesome system, but I should have bought less SNES ports

Super Nintendo

I own a Super Famicom which has been modded to work on European TVs and play games from every region in 50 and 60Hz mode. But almost every game I own is an American copy since they are cheaper and I think the cartridges look cooler (but of course the console and the controller look muuuuuuuuuuuuch better in Europe and Japan)
Nintendo 3DS
Games:

Console:

My favorite system currently. I also own many games from the eshop (though only 3 retail releases, Harvest Moon A New Beginning, Fire Emblem Awakening (duh), and Phoenix Wright Dual Destinies, which of course didn't get a retail release in the west)
It's also the only limited edition console I ever owned and I really like the Fire Emblem design on the top

Lastly all my collector's/limited edition stuff

Horri arcade stick from Tekken 6 bundle (bought at less than 1/3 the initial retail price).
Xenoblade Chronicles Collector's Edition
Super Mario All Stars for the Wii
Little Big Planet 2 CE (I've got the bookstands and plushie somewhere in the house together with a bunch of other LBP stuff)
PS3 LBP bundle
3DS Fire Emblem edition....
ok I don't own a bunch of collector's stuff I guess. But I found this old photo of all my LBP stuff. Unfortunately a lot was thrown/given away when I moved houses and I really regret it but I just had NO space


I also own a LBP drinking mug/cup which isn't in this picture for some reason.