1 definition by Firework917
An RPG created by Toby 'Radiation' Fox and a few others. Became popular at the end of 2015 due to a Kickstarter a few years earlier and a lot of famous Youtubers (most notably Markiplier, Jackscepticeye and Steam Train) doing Let's Plays of the game.
"Have you played Undertale yet, dude? It's such a fun game."
"No, man, don't have the funds. I'll watch a Let's Play until I got enough money to buy it."
"No, man, don't have the funds. I'll watch a Let's Play until I got enough money to buy it."
by Firework917 December 24, 2015