At the beginning of the track, lightning will strike, causing Boyfriend and Girlfriend to shake in fear. This is achieved through a hardcoded effect.
Whenever Skid and Pump say "yeah!" during the track, a unique animation will play instead of the regular singing animation. The player character also plays a unique animation when they have to repeat the "yeah!" back.
All difficulties were recharted, altering their note counts: 183/226/284 -> 194/229/281;
Difficulty ratings for all difficulties were changed: 3/4/7 -> 1/2/3.
Pico's cheer pose is now implemented. His "Hey!" pose is also now used.
Trivia
Spookeez was once notorious for how challenging it was for most players due to its intense difficulty spike from Week 1, even on Normal difficulty. In the Week 4 update, the song's Normal difficulty was toned down and made easier.
Parts of the song seem to reference "Scary Swings," the second track from "Spooky Month 2 - The Stars," specifically from 0:23 to 0:43.[1][2]
A voice can be heard around 1:12 saying "Trick or treat, smell my feet."
According to PhantomArcade on Twitter, Spookeez is performed by Pump while South is performed by Skid.[3]
Spookeez is one of the few songs to have its note count modified in one of its charts in the WeekEnd 1 update, in this case its Normal chart. The other songs to receive this treatment are M.I.L.F, Senpai and Guns.
According to a tweet made by Saruky, the ERECT remix for Spookeez will be replaced with a newer version in a future update, likely due to negative feedback the song had been receiving.[4]
Interestingly, the gunshots heard in the Pico Mix are part of Pico's vocal track. It is unknown why this is the case.
Skid and Pump cheering.
Skid and Pump cheering in the dark.
Boyfriend cheering.
Pico giving the middle finger in the dark.
Pico cheering in the dark.