3:12 Determination - Undertale Parody [ESPAÑOL] (Kira0Loka+Ray Scratch Cover) 4:36 Dr. Gaster - Undertale [ESP] (Ray Scratch Cover) 10:28 Determination 6:00 Megalovania - Undertale (Ray Scratch Cover) wing time remix 3:04 Megalovania - Undertale (Cover Español Latino) [Ray Scratch] 3:11 Determination-Undertale Parody (parody of Irresistible) | sans/chara error/ink (mashup) 3:14 Savlonic - Epoch - TLT Remix - [Español] (Ray Scratch Cover) 3:12 Determination - Undertale Parody (Parody of Irresistible - Fall Out Boy) ft. Lollia 9:35 Ray Tracing from Scratch: No Libraries, Just Math 4:37 Ray Tracing in 5 minutes