Huddersfield full-back Brett Hodgson scored a try and kicked eight goals to help clinch a comfortable win over Wigan that sets up a play-off date with St Helens next Saturday.
Leroy Cudjoe scored a hat-trick and Shaun Lunt waded in with two more in an eight-try demolition to seal third place in the Super League.
Hodgson, named Giants' player of the year last week, started what proved to be Huddersfield's biggest win over the Warriors in the Super League era in only the eighth minute.
His solo run was halted by the Wigan defence but they conceded a penalty by stopping Hodgson from playing a quick roll-back.
Luke Robinson punished the Warriors with the final pass for Hodgson to go through from a move started from the tap penalty restart.
That prompted a rout and Wigan's only respite was to score breakaway tries through Mark Flannigan, Pat Richards and Joel Tompkins due to sloppy Giants defending.
Apart from that, the game was mostly one-way traffic and the Giants could have won by more if Liam Fulton had not twice stumbled when clean through after 25 and 61 minutes.
A David Hodgson solo effort and the first of Lunt's tries ensured Giants led 18-10 at the break.
The home side extended their lead after 45 minutes when the bounce on a Fulton kick through deceived the Wigan defence and Cudjoe pounced for the first of his tries.
Minutes later Wigan's Sean O'Loughlin fumbled a pass and Lunt stole the ball to race clear and touch down.
Cudjoe then finished off a flowing move in the right corner after 63 minutes but saved the best for last when he ran the full length of the field to register a stunning solo try three minutes from time.
Wigan's Cameron Phelps misplaced a pass and Cudjoe pounced near his own try line and dashed the entire length of the field to touch down. Hodgson landed the conversion to finish with eight goal kicks from eight attempts.