Well, Wales looked like running away with it early on before being pegged by Tonga.
But from 24-24, the hosts stuck 50 unanswered points on the Pacific Islanders as Warren Gatland's side finished in ruthless fashion.
South Africa are up next as Wales go looking to complete a clean sweep this autumn.
Until then...
Post update
Wales 74-24 Tonga
Wales finished with a serious flourish, and Liam Williams got a deserved second try to top of the rout...
Hands will be going up for next week
Wales 74-24 Tonga
Adrian Hadley
Former Wales international on BBC Radio Wales
There have been a lot of claims for a starting spot from players today.
But honestly, I still expect to see 15 changes for the South Africa match.
Post update
Wales 74-24 Tonga
Mind you, this wasn't bad from Tonga's Sione Vailanu - loving the celebration...
Post update
Wales 74-24 Tonga
Ten tries to choose from, but how about this one from Aled Davies?
The outside half situation?
Wales 74-24 Tonga
Martyn Williams
Former Wales international on BBC One
I think the outside half situation for Wales is the big decision now ahead of facing the Springbok.
That's going to be a tough call
Wales delivered brilliantly
Wales 74-24 Tonga
Jeremy Guscott
Former England centre on BBC One
I think in years gone by we have seen Wales play this game and their heads go down, but this is how professional the unit is. Warren has got them in the right frame of mind to play these kind of matches.
They have delivered brilliantly.
Selection headache for Gatland
Wales 74-24 Tonga
Martyn Williams
Former Wales international on BBC One
In the past, selection on a Monday morning before a big game has been easy for Warren Gatland.
That is no longer the case.
Wales number three
Wales 74-24 Tonga
Jeremy Guscott
Former England centre on BBC One
Wales are the number three ranked nation in the world and today we saw exactly why.
"We want to win every game"
Wales 74-24 Tonga
Wales captain Ellis Jenkins: "It showed how much the boys want to play. It was a tussle at the start of the second half, they threw everything at us.
"It was tough for us, but we made it tougher for them.
"We want to win every game, so hopefully we can go on and complete the clean sweep now."
'We did the basics well'
Wales 74-24 Tonga
Wales fly-half Dan Biggar: "Reasonably happy, we started the game well and dug in and brought it back.
"Defensively Shaun Edwards is going to be a bit disappointed, but ultimately it's a good result to score 74 points.
"We just did the basics pretty well, even though we scored some really good tries. Against any team you have to do that well."
REASONABLY happy?!
Wales were so dominant
Wales 74-24 Tonga
Sam Warburton
Former Wales captain on BBC One
That is the most dominant I have seen Wales play against a tier two nation. We have struggled against them in the past, but not today.
Full-time
Wales 74-24 Tonga
That's it.
Wales continue their winning streak in emphatic fashion, that's eight on the bounce.
Great performance from Warren Gatland's side.
Converted try - Wales 74-24 Tonga
Liam Williams (78 mins)
Jake Ball goes direct and thunders into a tackle, he can't squeeze over but it creates space for Liam Williams... and in he goes!
Great ball from Wales, keeping it alive with Tongan tacklers hanging off them.
Ruthless.
Rhys Patchell pops over the conversion to take Wales' advantage up to 50 points.
Post update
Wales 67-24 Tonga
Wales are trying to work it from just outside their own try line now, flicking it through hands before Aled Davies decides otherwise and bangs one down field.
Selection issues?
Wales 67-24 Tonga
Jonathan Davies
Former Wales international on BBC One
There have been some big performances for Wales and that could mean some selection issues for next week.
Who plays ten next week? Dan Biggar controls the game and then Rhys Patchell comes on and scores a brilliant, brilliant try.
Converted try - Wales 67-24 Tonga
Rhys Patchell (74 mins)
Inside the final 10 minutes then, Wales fancy their chances of running in another one.
Rhys Patchell goes sauntering past three defenders from inside his own half, steps a lethargic attempt at a tackle and dives in between the sticks.
Barely looked like he got out of first gear there. Just cruised through a sea of parting red shirts.
And he adds the extras.
Getty ImagesCopyright: Getty Images
What a fantastic try!
Wales 60-24 Tonga
Sam Warburton
Former Wales captain on BBC One
That is a fantastic team try, there were two or three outstanding passes.
Converted try - Wales 60-24 Tonga
Aled Davies (71 mins)
Liam Williams and Steff Evans double up on the left, and now Aled Davies steps his way through, big hand off and he's in besides the post - what a try!
Superb from Wales, great support, magnificent offload from Williams to find Davies and that is a wonderful finish.
Live Reporting
Alex Bysouth
All times stated are UK
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Getty ImagesCopyright: Getty Images 
Latest PostUntil next time...
Wales 74-24 Tonga
Well, Wales looked like running away with it early on before being pegged by Tonga.
But from 24-24, the hosts stuck 50 unanswered points on the Pacific Islanders as Warren Gatland's side finished in ruthless fashion.
South Africa are up next as Wales go looking to complete a clean sweep this autumn.
Until then...
Post update
Wales 74-24 Tonga
Wales finished with a serious flourish, and Liam Williams got a deserved second try to top of the rout...
Hands will be going up for next week
Wales 74-24 Tonga
Adrian Hadley
Former Wales international on BBC Radio Wales
There have been a lot of claims for a starting spot from players today.
But honestly, I still expect to see 15 changes for the South Africa match.
Post update
Wales 74-24 Tonga
Mind you, this wasn't bad from Tonga's Sione Vailanu - loving the celebration...
Post update
Wales 74-24 Tonga
Ten tries to choose from, but how about this one from Aled Davies?
The outside half situation?
Wales 74-24 Tonga
Martyn Williams
Former Wales international on BBC One
I think the outside half situation for Wales is the big decision now ahead of facing the Springbok.
That's going to be a tough call
Wales delivered brilliantly
Wales 74-24 Tonga
Jeremy Guscott
Former England centre on BBC One
I think in years gone by we have seen Wales play this game and their heads go down, but this is how professional the unit is. Warren has got them in the right frame of mind to play these kind of matches.
They have delivered brilliantly.
Selection headache for Gatland
Wales 74-24 Tonga
Martyn Williams
Former Wales international on BBC One
In the past, selection on a Monday morning before a big game has been easy for Warren Gatland.
That is no longer the case.
Wales number three
Wales 74-24 Tonga
Jeremy Guscott
Former England centre on BBC One
Wales are the number three ranked nation in the world and today we saw exactly why.
"We want to win every game"
Wales 74-24 Tonga
Wales captain Ellis Jenkins: "It showed how much the boys want to play. It was a tussle at the start of the second half, they threw everything at us.
"It was tough for us, but we made it tougher for them.
"We want to win every game, so hopefully we can go on and complete the clean sweep now."
'We did the basics well'
Wales 74-24 Tonga
Wales fly-half Dan Biggar: "Reasonably happy, we started the game well and dug in and brought it back.
"Defensively Shaun Edwards is going to be a bit disappointed, but ultimately it's a good result to score 74 points.
"We just did the basics pretty well, even though we scored some really good tries. Against any team you have to do that well."
REASONABLY happy?!
Wales were so dominant
Wales 74-24 Tonga
Sam Warburton
Former Wales captain on BBC One
That is the most dominant I have seen Wales play against a tier two nation. We have struggled against them in the past, but not today.
Full-time
Wales 74-24 Tonga
That's it.
Wales continue their winning streak in emphatic fashion, that's eight on the bounce.
Great performance from Warren Gatland's side.
Converted try - Wales 74-24 Tonga
Liam Williams (78 mins)
Jake Ball goes direct and thunders into a tackle, he can't squeeze over but it creates space for Liam Williams... and in he goes!
Great ball from Wales, keeping it alive with Tongan tacklers hanging off them.
Ruthless.
Rhys Patchell pops over the conversion to take Wales' advantage up to 50 points.
Post update
Wales 67-24 Tonga
Wales are trying to work it from just outside their own try line now, flicking it through hands before Aled Davies decides otherwise and bangs one down field.
Selection issues?
Wales 67-24 Tonga
Jonathan Davies
Former Wales international on BBC One
There have been some big performances for Wales and that could mean some selection issues for next week.
Who plays ten next week? Dan Biggar controls the game and then Rhys Patchell comes on and scores a brilliant, brilliant try.
Converted try - Wales 67-24 Tonga
Rhys Patchell (74 mins)
Inside the final 10 minutes then, Wales fancy their chances of running in another one.
Rhys Patchell goes sauntering past three defenders from inside his own half, steps a lethargic attempt at a tackle and dives in between the sticks.
Barely looked like he got out of first gear there. Just cruised through a sea of parting red shirts.
And he adds the extras.
What a fantastic try!
Wales 60-24 Tonga
Sam Warburton
Former Wales captain on BBC One
That is a fantastic team try, there were two or three outstanding passes.
Converted try - Wales 60-24 Tonga
Aled Davies (71 mins)
Liam Williams and Steff Evans double up on the left, and now Aled Davies steps his way through, big hand off and he's in besides the post - what a try!
Superb from Wales, great support, magnificent offload from Williams to find Davies and that is a wonderful finish.
Brilliant.
WATCH: Evans try pushes Wales ahead against Tonga