The 'Western Minecraftia Offensive' (Japanese: 西方鉱山攻勢; Hepburn: 'Seihō Kōzan Kōsei') was a period of insurgency that began on September 13 and ended with the Rockton Attacks on December 21, 2002, when the Shintoist Province and Scarlet Devil of Team Crimson aligned their forces with several former Gyönyörű Földünk militants and began an offensive in a second attempt to overthrow the Monarchy of Minecraftia and replace the government with a one-party socialist republic.

During the offensive, the group secretly set up strongholds in rural areas of Western Minecraftia. Three cities in Western Minecraftia were attacked during the offensive, with the South Horudika Canal bombings on September 22, the second being the Kyoushin bombings on November 11, and the last one being the Rockton attacks which eventually caused the Minecraftian Civil War. The first attack was purportedly in response to the Minecraftian anti-Shinto film The Innocence of Reimu Hakurei.

Following the attack on South Horudika Canal and the attempted assassination of King Soujirou, he and his prime minister declared a state of emergency. However, the state of emergency did not go into effect until the Kyoushin attack in November.

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