Stage 1 : Microchip
Lives in a big microsoft warehouse, and accidently gets Coca Cola spilled onto him, causing a loud bang and a bright flash, thus changing into....
Stage 2 : Blob
This is its second form, it has mutated into a small electrical blob, its brown and sticky, a lot like coke, and goes around making fizzing noises
Stage 3 : Cocacolaxboxotchi
Its final stage, the fully evolved tama gets adopted into a teenagers room to feast on his mess
BONUS stage : Cocacolaxbox360otchi
Due for release 2nd December 2005.