(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F4%2F43%2F17._Buzzy_Beetle_Card.PNG&hash=6cc5bad77d848027ffc541305a819d3f)
RIP, cute Buzzy design. *snif*
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F1%2F1d%2FPM3DS_nsmbw_grassland.png&hash=12fc06038e1b590d6d890326bcc645a1) (https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F4%2F4a%2FPaperMarioFrogSuit.png&hash=a45a2534712b0edb6be9a9149bb7c5ab)
Oh, look, it's NSMBW World 1.
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F8%2F8e%2FWigglerPM3DS.PNG&hash=aba966c964d6134e8d244dc4d7a77d6a)
And World 5.
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F4%2F4e%2FPM3DS_volcanoland.png&hash=94af9cd8c2d92442d0a6d8bc64d8c43a)
And World 6.
Compare the Goombas in an early screenshot to a more recent one:
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F8%2F8a%2FGoombaPM3DS.PNG&hash=56b8729a3428d93f8d1c31c80ca7ffa4)
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Fthumb%2Fc%2Fc9%2FPM3DS23.png%2F640px-PM3DS23.png&hash=fbb0c1b3d9f3ba41af0ef2f3785edef7)
Because we simply can't have people thinking Goomba's eyes are slightly bigger than they're supposed to be or that their skin is a slightly lighter Pantone shade.
Also notice that in both shots, the enemy Koopa Troopas are not wearing sunglasses.
Look at Spinies:
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F7%2F77%2FSpiny_PMTTYD.png&hash=bcf606d414717f396ba6cb8ebec8265b)
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Fc%2Fc0%2FPM3DS18.png&hash=adade6db385da900f61121ec6ada52e4)
Look at the blocks! Apparently after E3, the development team got a memo that their blocks were too different, and people would get confused.
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Fb%2Fb6%2FPaperMario3ds2.PNG&hash=8a4d76df11af4aa060176a0510ba0149)
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Fc%2Fcc%2FPM3DS12.png&hash=e6a042b790334f74079f7bba4763febd)
A Brief Block History
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Ff%2Ff1%2FPaper_Block.png&hash=6f9113457c7e9bc7bc5eddf917b44d91)
Paper Mario
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Fa%2Fa6%2FPM3DS_%253Fblock.png&hash=8c9005ea9d6533cc462bc8db1d5965a8)
Paper Mario 3DS
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F7%2F7a%2FBlock_Superstar_Saga.png&hash=c393af98aa476384b20d7db34f3f1bc4)
Superstar Saga
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Fa%2Fa1%2FMario_Luigi_Bowser_Story_Block.png&hash=a4d80297ea02af70bb26bb45fc0bdc50)
Bowser's Inside Story
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Fthumb%2F0%2F02%2FQuestion_Block_NSMB.png%2F150px-Question_Block_NSMB.png&hash=ed1c2f437e5898db2637886ae858b290) (https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F9%2F95%2FQuestionMarkBlockNSMB.png&hash=54ca2928aae0d6022e9eead39fe61a23) (https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Fthumb%2F9%2F91%2FGalaxy_QuestionBlock.jpg%2F150px-Galaxy_QuestionBlock.jpg&hash=5ab4dd10d7f87be5c9afa61951e2fbf3) (https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2Ff%2Ffc%2F%253FBlock.png&hash=0c2124713188b8de9de846b6afa3c3e8) (https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F7%2F75%2FQuestion_Block_3D.png&hash=a5af9dcac910aadcdba21bcaff0a07cb)
Everything since 2005
Hmph. I need to go play TTYD again.
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F3%2F3a%2FPaperMario_Items_FireFlower.png&hash=5e333a9c562ff6e26cbab43bb624e68b)
Paper Mario
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fwww.mariowiki.com%2Fimages%2F2%2F25%2FFireFlowerTTYD.PNG&hash=4ab650f0d708a14fbbdf35c671e0820d)
Paper Mario: The Thousand-Year Door
(https://themushroomkingdom.net/board/proxy.php?request=http%3A%2F%2Fthemushroomkingdom.net%2Fimages%2Fss%2Fpapermario-3ds%2F017.jpg&hash=b23ea5cc36514ef3841b7341b95aa3b4)
Paper Mario 3D
This is actually a nice transition, keeping the same colors and everything, but it still bugs me. I've always preferred the SMW Flower design, personally.
(The POW Block is also different)