Wales stayed firmly on course for a potential quarter-final showdown with Ireland after crushing an outclassed Namibia 81-7 at Stadium Taranaki.
Wales moved second in Pool D behind world champions South Africa after easily passing their previous record World Cup-winning margin of 54 points against Japan four years ago.
Victory over already-eliminated Fiji next Sunday should secure their last-eight place - and a meeting with Ireland in Wellington on Saturday week.
Coach Warren Gatland made 11 changes from the team that beat Samoa in Hamilton, and although Wales struggled for fluency at times, they still coasted home.
Centre Scott Williams scored three of his team's 12 tries, while there were also touchdowns for substitute wing George North (2), Williams' midfield colleague Jonathan Davies, wing Aled Brew, prop Gethin Jenkins, number eight Toby Faletau, full-back Lee Byrne, lock Alun-Wyn Jones and replacement scrum-half Lloyd Williams.
Fly-half Stephen Jones marked his record 101st cap by booting six conversions and a penalty, while Rhys Priestland converted three tries after going on for the final quarter.
Namibia managed a consolation try for lock Heinz Koll, converted by fly-half Thuens Kotze, but they bowed out of the World Cup following four successive defeats that saw them concede 266 points.
Wales now head back to Hamilton to face Fiji as their World Cup campaign continues to gather impressive momemtum.