.hackey (Magazine)
.hackey ("dot hack key") was a Japanese monthly magazine distributed to stores as a promotional campaign. Each issue has 2-4 pages of information about the series. There was a campaign for fans who collected stamps when they acquired the different issues of .hackey from participating storefronts. Fans could use a filled stamp card to earn special merchandise.

| Cover | Issue | Date | Contents | Cover | Issue | Date | Contents | Cover | Issue | Date | Contents |
|---|---|---|---|---|---|---|---|---|---|---|---|
| .hackey Vol.1 | 2002 June 01 | .hackey GU 1 | .hackey Link 1 | ||||||||
| .hackey Vol.2 | 2002 July 20 | .hackey GU 2 | .hackey Link 2 | ||||||||
| .hackey Vol.3 | 2002 September 01 | .hackey GU 3 | .hackey Link 3 | ||||||||
| .hackey Vol.4 | 2002 September 18 | .hackey GU 4 | .hackey Link 4 | ||||||||
| .hackey Vol.5 | 2002 October 30 | .hackey GU 5 | .hackey Link 5 | ||||||||
| .hackey Vol.6 | 2002 December 04 | .hackey GU 6 | .hackey Link 6 | ||||||||
| .hackey Vol.7 | 2003 January 28 | .hackey GU 7 | |||||||||
| .hackey Vol.8 | 2003 February 26 | .hackey GU 8 | |||||||||
| .hackey Vol.9 GIFT Special | 2003 March 25 | .hackey GU 9 |