Get your NEW Holiday Theory Wear! ►► http://bit.ly/2Taok30 The Tragedy of Deltarune ► https://bit.ly/2DyFVwa Who is W.D. Gaster? (Undertale) ► https://bit.ly/2EcRDxG Special thanks to Whynne again as well as Geoff from Mother's Basement for helping me work through all the bits and pieces of this huge series of three theories! Also, special thanks to itsmeveronica for usage of their custom Ralsei crying animation ►►1:07 The biggest mystery of Deltarune is how it connects to Undertale. Is it a prequel? A sequel? Something completely different? Today Loyal Theorists, I am here to help you solve this mystery. What is Deltarune? Oh boy, do I have an answer for you! Find the game here! ► https://www.deltarune.com/ Don't forget to snuggle up in our new hood-tastic holiday Theory Wear! ► http://bit.ly/2Taok30 Need Royalty Free Music for your Content? Try Epidemic Sound. Get Your 30 Day Free Trial ► http://share.epidemicsound.com/MatPat SUBSCRIBE for Every Theory! ► http://bit.ly/1qV8fd6 Hang out with us on GTLive! ►► http://bit.ly/1LkSBnz More THEORIES: Mario Maker BIGGER than the UNIVERSE! ► https://bit.ly/2CFNilS The END of Princess Peach! ► https://bit.ly/2CJuYbm How BAD is Mario's Blue Shell? ►► https://bit.ly/2BfFlUK Mario Kart 8, Mario's SCARIEST Game? ► https://bit.ly/2wyeell Luigi - Secret MILLIONAIRE?? ► https://bit.ly/2CEkk15 Check out some more of our awesome video game content: Game Theory ►► http://bit.ly/1zz3t7E Culture Shock ►► http://bit.ly/1sw7aZ8 The SCIENCE! ►► https://goo.gl/GFK9EV #DeltaRune #Undertale #TobyFox #Kris #Chara #DeltaruneTheory #Charity #Susie #Rasiel #Lancer #Sans #GameTheory