It's all one sprite, there's also an override (won't explain here, there's a comment on it in the sprite) for if you want it to be just one or the other, saves time.
I made this mostly for the people putting scratch projects on GameJolt (and alike), it's like the "Made in Unity" splash. This also has automatic Turbowarp detection* to play an alternate animation *Only works if you use any enhancements in Turbowarp, may not detect it all the time