Insane Undertale Deltarune Crossover

Deltarune Undertale Fangame Rouxls Kaard. Merg Gameplay Playthrough with commentary and reactions.
Game by BlazingArrow12 and Dominus Maestro
gamejolt.com/games/deltaruner...
Undertale and Deltarune by Toby Fox
More Deltarune Fangames
• Deltarune Fangames
#merg #undertale #deltarune
All footage and music used belong to their respective owners. Allowance is made for fair use for purposes such as criticism, comment, news reporting, teaching, scholarship, and research.
Thanks for reading. :) breaking all the rules

[@TwisterX8]

Rouxls Kaard has transcended time and space to take us back down memory lane while kicking our butt. Truly a Rouxls Kaarding moment.

[@juliansynoground]

Definitely

[@sketchedviper4594]

He sure does know how to make thy worms toil

[@hunterchichester5720]

I loved the part where he said 'it's undertale time" and undertaled all over the place

[@RylishZaliou12]

@@hunterchichester5720stop with the lazy and low effort jokes which are unfunny.

[@obi-nh9eh]

Yessir

[@superskele333]

Yes! Thank you so much! This game has been in production for 3 years and all the praise is really awesome. Thanks again!

[@TwisterX8]

nice game

[@undermemes2357]

Really good job on it!

[@superskele333]

Im not the main developer btw im just a playtester and have been helping with the game and creators from the start

[@SPAMTON249]

​@@superskele333oh ok

[@Merg]

[@W.D_Gaster]

I find it very funny how we collectively agreed that Rouxl is this Asriel level entity transcending time and space, meanwhile at the moment all he really did was simp for King and Queen

[@Cookiekopter]

I mean he can literally teleport

[@SemNome-ud2dr]

​@@CookiekopterSans too, and that doesn't mean he's as powerful as Asriel

[@thepainpanda7681]

@@SemNome-ud2dryeah true, but didn’t he glow and hover during the ch2 acid river fight? I’m just wondering what would’ve happened if he didn’t turn to stone

[@raileynashpallada9559]

It was cause of his name the rouxl kaard

[@Lavenderflowergacha]

@@thepainpanda7681him not turning into stone probably.

[@presidenthaltmann7496]

To get your items back, Rouxls will eventually throw an item button from the box, and if you touch it, you can use your items again.

[@DominusMaestro]

A huge thanks from everyone who worked on the project! You've been a huge inspiration to us! Feel free to try the true ending (or nightmare mode). P.S. We'll be looking into the unintentional glitches (Whoops!)

[@theaveragemobileuser]

How is my bro not verified yet???

[@thegreatgod1371]

Merg the reason you are in the special thanks is probably just that you inspired the person that created this mod. Edit: I wouldn’t be surprised if that’s the case, because you are inspiring.

[@DominusMaestro]

:D yesh

[@ChaosFactor349]

Merg never fails to keep us trapped in Deltarune

[@viunok]

He himself is trapped in sans fights

[@kirbyfreakyt4695]

I dunno, he still hasn't done Ribbit yet and that mod is amazing

[@drantigon]

​@@kirbyfreakyt4695mod?

[@justarandomdude.8907]

@@kirbyfreakyt4695 maybe he tried but he just decided to not do it for just how much swearing n stuff there is

[@kirbyfreakyt4695]

@@justarandomdude.8907 I mean, fair, but swearing to that extent never stopped him before. Literally La Jupo has quite a few

[@SPYROSTSABOURIS]

This fangame went from "whatever..." to "absolute insanity" And I love it!

[@bdwlf7670]

The fact that theres almost an hour left after you get the pacifist ending is scary

[@andyplaysgundam]

The Undertale box part is hilarious 😂 Also Rouxls Kaard: "I now decree the player's movements are reversed" Merg: *reverse are controlled flashbacks*

[@ShockInazuma]

This is what happens when he makes Mac & Cheese, and nobody stops him.

[@TheFawfulExpressMustardO-cx6mw]

Can we talk about that Rouxls Undertale sprite? He looks so majestic and regal, I love the way he holds one arm behind his back.

[@BoxingMan-sn8qx]

This is truly one of the Merg moments of all time. We love you Merg! 🍒😎❤️

[@Tazawa_OLD_ACCOUNT]

This was really, most definitely, one of the Mergs to ever.

[@justaguy9215]

Rouxls Kaard really is the Zote the mighty a knight of great renown of deltarune and that makes him the best (and hottest) character in the game, cool by the way

[@modoplays5065]

When silksong.

[@W.D_Gaster]

Can't wait for chapter 7 when we'll get a look into RK's mind

[@teddyrichard1488]

​@@modoplays5065silksong is fake

[@modoplays5065]

@@teddyrichard1488 NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO

[@Victini7472]

this genuinely feels like it could be in deltarune and i love it for that lol

[@jammington24]

The dialogue could be better, but I would agree with the rest of it.

[@Victini7472]

@@jammington24 fair

[@based980]

not really

[@j_mz]

i love how merg was so surprised when he saw his name in the credits lol

[@user-so9kq6om2s]

This fangame is actually super unique... I love it!

[@anidreemer9511]

im so glad to see merg playing this, Rouxls is one of my favorite characters and by far my favorite character to voice, best thing to watch on my way to work

[@promanprogames1101]

So happy that popular youtubers like this playing these awesome underrated fangames

[@undermemes2357]

Yeah! there are so many underrated fangames out there, it's nice they are getting coverage

[@thisnameisbad3609]

"dont worry guys, we've tested and a no hit run is 100% impossible"

[@void8027]

Skill issue.

[@gaminganimators7000]

Everyday.. Merg strays further from innocence, ot fills you with determination

[@gaminganimators7000]

Spelling mistake.. GOD.... DAMN IT

[@undermemes2357]

I was waiting for you to play this fangame Merg! You finally did! ❤🍒 Now I have to see your reactions to the Astromeda demo, in the ending it breaks the fourth wall like Oneshot it's crazy. the game is so underrated and it's like Undertale! Guess it's time... Day 2 of asking Merg to play the Astromeda demo

[@undertale-thecorruptedtime2226]

I've been watching Merg ever since he made his playthrough on Undertale Yellow and I love his videos but I wish he played something a little different than just undertale or deltarune once in a while. Astromeda is criminally underrated and the dev is super nice, they changed and improved the game for the last 3 years and its really come a long way. I really hope Merg plays it.

[@isnotbaldeagle4580]

@@undertale-thecorruptedtime2226He does play other games?

[@PoipoleADMyt]

When I first saw this fangame, I was waiting for you to check it out. Honestly, it wouldn't surprise me if Rouxls actually did this in a later chapter.

[@Smug-Cat]

i feel like it would

[@kingstonlovely7404]

Rouxls can't be THAT powerful

[@anthonyackerman7914]

1:17 HE SAID IT! HE SAID THE THING! (kinda)

[@The_Boi-cf3gb]

5:36 HE SAID IT AGAIN!

[@joewilliams-un8vu]

I’m glad you finally played this. This fan game might actually be my favourite Deltarune fan game.

[@TheEpilougeAsylum]

This was one of the most CRAZIEST and AMAZING fangames I've ever seen. The details in this game are actually fantastic I don't think I've ever seen a better character based on a character who was seen as normal in the original but was actually a GOD. If this is canon I will honestly be flabbergasted. The ending was mad goofy though💀 "Gosh... Darnit." Very amazing fangame and very unique. This was very interesting and exciting to watch Merg! Very cool :)

[@dokkback850]

14:08 Roulxs being meta/self aware is something I didn't expect to see haha😅

[@joshspaulding1281]

25:13 "She's losing all of her 'character development!" -Merg

[@GDAllloy]

Man, i love this fangame. Thanks for playing it, I actually thought of how it would be if you played it the first time I saw it. Also thanks for your content in general, I really enjoy it. :)

[@Error-40417]

15:55 I can’t help but think that this is probably a reference to Disney’s sleeping beauty. 18:43 Pokémon reference. 41:49 How about Asgard? (Asgore and Kaard) 57:07 that’s a reference to Disbelief Papyrus.

[@gubbebubbe4942]

Yo Merg, been watching you since the Boshy Era. Your videos are really comforting, so thanks.

[@Fodnex]

I am sorry i can't look at that, your* But i agree, his videos always make me relax

[@gubbebubbe4942]

I fixed it just for you, @@Fodnex

[@theaveragemobileuser]

You can recover the item button on the filler attack, it will appear randomly!, mercy on rouxls kaard is a different ending.

[@kateleese1037]

i saw a playthrough of this before this video but it's always welcme to see a merg playthrough of a fangame, whether seen or not!

[@betzyellow]

5:42 HE'S THE SADDEST LITTLE DUQUE THERE EVER WAS ☹️ 10:31 quotes from my therapist 13:25 merg reacting to a game's credits is my favorite genre 15:50 my honest reaction 15:58 i love that you're like all enthusiastic about changing it and then you realise and just go "shut up" 21:31 "i think it's still all in good fun" and literally 10 seconds later bro goes genocide 28:41 nooo kris don't let the intrusive thoughts win 29:42 WDYM IT'S ADORABLE 30:57 i love this quote lmao 32:54 you don't 🥕 about them at all, do you? 33:38 will merg ever stop being down bad for the weirdest characters? 37:20 no offence but what 😭 46:42 you don't have max, you ARE max silly! 50:52 🧀🧀 christ 52:46 why is this hilarious tho 53:47 it's not even me playing, but i was so mad 54:47 "baby" and then "shut up asriel" caught me so off guard 55:00 he didn't hesitate for a second 58:27 take this clip out of context 1:00:12 i don't get it but i kinda don't wanna ask 1:00:50 "no, you'll be greater ded" 1:03:15 merg as rules says his final words 1:03:34 (scared gf emote) 1:06:40 YOU CAN'T SAY THAT DUDE he's literally ripping his heart out 💀 1:07:14 "good, good, good" yeah merg the memories are flooding back

[@SC3P100]

This fan game broke him

[@Michal-je1hx]

I beat the game on normal and it was a great experience. I unironically think that Rouxl Kaard will be very important to the deltarune plot and very powerful because he is a rule card

[@mastergamingpro3777]

Man I still don’t understand how you still uploading Undertale videos like that. You have been doing that for years and yet you never get bored. Good job man you got great content

[@anime_amv_lover8498]

it seems like after a gruleing fangame, merg has finally seen the true power of rouxls kaard which we have prophesized to be beyond the measuring capabilites of this world, however, this is but a mere warm up for him one can only imagine what else kaard has in stock

[@commenteroftruth9790]

This really makes me appreciate Toby Fox's skill at writing lol.

[@Lumeotheceooftheotterkind]

Rouxls wasn't glitching, he was showing his true power, Papyrus defies gravity, Rouxls defies space.

[@Fizz844]

You already know it's good if Dominus Maestro Participated in this

[@yaboipktendo]

Shoutout to this game for using the Roulxs Fantrack that i'm pretty sure was made not long after Chapter 1 was released. I clearly remember that time when people were making fun little things for a potencial Genocide Roulxs

[@Book_Reader1]

No way you played this fan game! I really hoped you would when I first saw it!

[@54697avcdkav]

Been watching you since you first played underswap, just got a notification and a fat wave of nostalgia, keep making people happy man.

[@OBDT_YT]

I love how they give Susie a reference to Jevil’s final attack (Since the Devilsknife is given to her specifically) Also: You missed the ending you get when you Spare Rouxls at the end of the Undertale segment

[@Genocidefrisk637]

Bro I just spawned in. Like I was teleported here. Strange.

[@mr.fanfavorite5202]

How is merg always just so, whimsical? Like he always has something positive and or silly to say

[@pikarizardcharikachu2573]

It's been so long since we got a top tier mod that as good as this. Well done BlazingArrow12, Dominous Maestro, and everyone who made this game possible! Also I think the game is already perfect as it is. No nerfing needed xD Now the biggest question Merg: No Hit When? xD

[@skelebro9999]

18:53 merg whistle. merg whistle.

[@omgem3669]

I genuinely expect Rouxls to absolutely demolish us at some point. He’s had epic powers hinted at. He’s gotta use them eventually.

[@zanithony1276]

I have never seen Rouxls Kaard been so much important! I LOVE IT

[@OhioButtTicklingBandit213]

ITS ROUXLS KAARD LETS GO

[@_MehdiB_]

Thanks for playing all theses fangames with us, my pc is terrible i have 20fps in the final run

[@Geldigidecek]

Bro realized he is the Rules Card💀

[@firegamer2118]

Mergggg!! Congrats on the 1 mil my man! Gg! 🎉❤

[@Real2s2s]

i forgot about this one but nice that you played it it is really well made ngl

[@thefrubblewarrior4678]

11:48 Some attacks can be made swifter or more complex, like Susie’s attacks being faster or Ralsei’s attacks having faster and more complex patterns.

[@TheRealUltimare]

Merg hitting us with another banger vid! Ngl this Rouxls Kaard fangame is one of my favorite Deltarune fangames out there. Just a little hint, you might actually wanna do the MERCY option. It's a lot of work but, I think it's worth it

[@darestep7844]

I loved the part where Rouxls said "It's UNDERTALE Time." and started undertaling all over the place.

[@cheeddacat]

Another day, another piece of Merg's innocence evaporates

[@Grassislike]

Oh ive seen this on Mystic Slime's channel, im glad you played it, its a really cool fangame. Epi crossover

[@Bugaboo8]

I'm curious what would've happened if you striked down Susie without healing Ralsei, hmmm. Great video as always Merg! P.S. By the way, if you wanted to do more FNF, that Vs. Chara mod got an update a while ago! It looks pretty neat, albeit it's a demo.

[@swordmaster24681]

Huh when did you get to a million subscribers, congrats owo

[@ask3s]

🎼"You know the rules, AND SO DO I!"🎼

[@Walking_W]

When Merg goes silent the monsters are scared.

[@richbrine64]

Merg once again tackling Deltarune Fangames fills you eith determination

[@theaveragemobileuser]

YESSSS THANKS FOR TAKING MY SUGGESTION IM SO HAPPY :D

[@Its.a.me.wavey_]

I remember when the title says "The least unhinged fangame"

[@macnochi-chan4489]

Me too

[@buewf2452]

Yay I was waiting for you to play this game, it's sooo good i've played it like a 100 times. Lowkey should have been in the og game

[@drifter8735]

you know it's a great day when merg uploads

[@anomorifan2047]

Oh here we go with Rules Kaard! More Deltarune content from Merg ❤

[@gabrieldocia6922]

Yet another piece of art

[@danyk1n2]

Still love you Merg ❤❤❤

[@KyleGK01]

It's been a while since I've seen any merg stuff

[@Gr00vy3]

That one moment when he said, “There is nothing we can do.” Got me like: Dans mon esprit tout divague, je me perds dans tes yeux Je me noie dans la vague de ton regard amoureux

[@pawixerXD]

9:06 "There is nothing we can do" - Bonaparte

[@seandorama5932]

WHAT THE HELLLL??? I accidently skip a video I was watching and now I see you playing this banger of a game!!!

[@lolacabana123]

Merg I have been watching your videos for a while. I was waiting for you to do this one. Seeing all the monsters turn into stone was sad. Am I the only one?

[@Kelswagsinandballin]

Woah... Truly an epic merg gaming

[@n2co2o2on]

i love how merg's reaction to undertale rouxls kaard is "oh you're sexy"

[@dragonrage4904]

1:08 the “errrmmmm im white?” Got me creasing on my bus to college man

[@MVP123]

merg is probably the most wholesome person that can destroy every undertale/deltarune boss in existence. edit: why change title?

[@back_the_bone]

15:55 "Make it like blue or..." [Roulxs literally changes the color of K.Round to blue.] "Oh."

[@lazy-dudes]

1:07:20 ~ 1:07:35 Dudeee merg you are amazing why am I laughing so hard 😂

[@skeletonplayingatrumpet]

no matter what it takes, we WILL get rouxls to be the final boss of ch.7

[@OnzieReeves]

At 37:23 when Rouxls said "F-friends?" I genuinely felt bad :(

[@TheOddDog0007]

Open act when ralsei first stops attacking susie for a little achivment :)

[@JarisRuswana]

him saying "how we supposed to do this without heals" me see all the no hit runs he have been doing

[@liamnesty66]

He is the TRUE Rouxlser (pronounced ruler)

[@Xze3]

16:14 I love the fact he stops everything and goes to the song lol

[@yourdemiseishere]

This is gonna give rise to Rouxls card phase 10 stuff, all based on that old comic...

[@gokdeniz-merihyldz2082]

Rouxls Kaard finally becomes the duke of the puzzles by fighting delta-trio... again. Epic. Edit: Maaan, i lost Merg's heart bcz i deleted "again".

[@yourface588]

39:29 its the most poweful thing in undertale, the bird that carries you over a disproportionately small gap!

[@j_mz]

yay another Merg video! 🎉

[@seandorama5932]

Merg please do a no hit, hard mode, playthrough, mostly because we didn't get to see some of the sprites in the fight Trust me your going to love the part with the souls much more with Rouxls Kaard not glitching out

[@ejej5507]

"Least Unhinged" *Yeah that seems about right*

[@taghreedali1948]

Know all we need is a fan made battle against nuburt

[@Eggbird9678]

The music in these Fangames are always great

[@josephkarlis9862]

I was waiting to see when Merg would play this

[@cornexpress]

again, I suggest that you play slime rancher. as a long-term fan of yours, i know you'll love it

[@theoriginalstarwalker3455]

51:40 Rouxls Kaard is Minos prime confirmed???