Purchasing a PikaBox will grant EVERYONE online a box. When this box is opened by a player, they will recieve 12 PikaPacks (60 Pokemon)! You may then open the packs to receive 5 Pixelmonfrom each pack. You can battle, collect, or trade these Pixelmon, it's up to you.
Each Pixelmon you receive has a decent chance to be Shiny, and if you are lucky Legendary!

The Pixelmon inside of this pack include:
Very Rare:
Mew

Rare:
Zapdos

Common: 

Pikachu, Caterpie, Metapod, Butterfree, Paras, Parasect, Growlithe, Squirtle,

Wartortle, Blastoise, Seel, Dewgong, Horsea, Seadra, Goldeen, Seaking, Magikarp,

Gyarados, Omanyte, Omastar, Raichu, Magnemite, Magneton, Voltorb,

Electrode, Electabuzz, Jolteon, Clefairy, Clefable, Drowzee, Hypno,

Diglett, Dugtrio, Geodude, Graveler, Golem, Onix, Mienfoo, Mienshao,

Nidoranfemale, Nidorina, Nidoqueen, Nidoranmale, Nidorino, Jigglypuff,

Chansey, Nidoking, Eevee, Snorlax, Arcanine, Wigglytuff,

Pinsir, Cottonee, Whimsicott, Petilil, Lilligant, Ponyta, Rapidash, Heatmor,

Sizzlipede, Centiskorch, Psyduck, Golduck, Bruxish, Snom, Frosmoth, Blitzle,

Zebstrika, Helioptile, Heliolisk, Pincurchin, Slowpoke, Slowbro, Woobat, Swoobat,

Golett, Golurk, Sandshrew, Sandslash, Clobbopus, Grapploct, Ekans, Arbok,

Pawniard, Bisharp, Rattata, Raticate, Farfetchd, Doduo, Dodrio, Minccino,

Cinccino, Wooloo, Dubwool