Labelling was done during bouts of insomnia and I apologise for any misnomers. You can see the proper shade names on the Addiction site. For more information about this exclusive-to-Japan brand, see glossedintranslation, who also has a wider range of swatches. and red hair. and frankly, an excess of pretty.
I've supplemented the pictures with some shade descriptions if I felt that certain nuances weren't showing up, or if the actual finishes differed quite a bit from the official categories of M(atte), ME(tallic), P(earl) or S(parkle). Feel free to send any further questions by email or comment form and I'll try my best to answer them.
044P Tiny Dancer -- satin grey base with pink microshimmer
032ME North Star
027P Concrete Jungle -- actually a barely satin matte
001M Paper Doll -- this was the smoothest of all the Addiction mattes
002P Sugar Angel
004S Snow Bouquet (not Banquet, wtf brain?) -- ditto, with pink, purple and gunmetal grey glitter
005S Snow Bird -- ditto, yellowy gold, pale green and pink glitter
006S Snow Venus -- ditto, cool gold, silver and pink glitter
007M Beige -- actually a very finely milled satin with more glow than Concrete Jungle (P)
031ME Neverland -- intense metallic blackened green
026M Missa -- tricky texture, needed 4 swipes to look even
029ME Arabian Ruby -- drier and patchier than other Addiction ME shades
050P Mystic Mirage -- a slightly gritty rose pink with silver glitter
051M Midnight Oasis -- not quite as uncompromisingly matte as Nars Outremer but superior in every other way
045P Bad Romance
023P Star Vega -- matte black base with warm violet glitter (drier and chalkier than the next two)
024P Star Sirius -- matte black base with blue glitter
022P Stardust -- ditto, silver glitter
021ME Crow -- sadly most of this shade's complexity stays in the pan
020P Keshi -- a grey-based, slightly less intense cousin to Crow
019M Joker -- neutral-warm matte black (Chimney is the cooler, sootier option). Disregard stray glitter pollution.
033ME Morning Moon
047P Out of Africa
048P Safari Mode -- like Out of Africa, a beautifully smooth satin
040M Chimney -- cooler matte black than Joker, with slightly smoother texture
013M Truffle -- beautiful smooth-textured warm brown
014M Chocolat -- difficult to swatch evenly, a little dry
016P Dolce Vita
017ME Fudge -- the best texture out of all the Addiction eyeshadows I felt -- molten creamy bronze
Truffle, Chocolat, Dolce Vita and Fudge again (because neutrals can be sexy)
008ME Ice Wall -- palest cool ivory metallic
010P Magic Flute -- beautiful subtle-yet-sophisticated satin, somewhat overshadowed by...
011P Sandbar -- there is an exquisite and complex sheen to this in real life, a platonic lid shade.
035P Thriller -- dark green with silver, blue and red glitter
030ME Flash Back -- glorious neutral taupe. My introduction to the brand and the reason Addiction was at the top of my counters-to-check-out-in-Japan list.
015P Nostalgia -- warm peachy-brown with silver glitter (somewhat gritty)
018P Baghdad Café
012ME Rigoletto -- another pitch-perfect shade name in a brand full of 'em
(I missed out Earth Wind. Please don't whip me -- I have this condition, blindness-to-warm-browns.)