Clash of Clans Builder Base Bonanza becomes the 6th Builder catch-up window

Clash of Clans players who have ignored Builder Base should probably stop ignoring it for the next two weeks. Builder Base Bonanza is live from 17 to 31 May, reducing upgrade costs and timers by 50% across most Builder Base systems, including buildings, defences, heroes, Star Laboratory research and walls. The event also adds a 4x Builder Base Star Bonus and rotating tasks with useful progression items. That makes this one of the easiest periods to push toward B.O.B and unlock the 6th Builder for the Home Village.

It is not a glamorous new troop event, but it may be one of the most practically valuable Clash events this month. The smart play is to plan upgrade chains now, keep resources flowing and use the discount window before it disappears.