--What is My silly game?--
My silly game (MSG for short) is a FNaF fan-game in which you - in typical FNaF fasion - have to survive in an office while a group of animatronics (in this case a group of sillies) tries to find and kill you.
There are 6 characters in the game: Silly, Devious, Silnk/Shadow silly, Shapeshifter silly, Bronze silly and Keisha. All of their behaviors in game will be explained below.
Silly
Silly always starts the night on cam 1 and goes through cams 2 and 4 and then prepares to attack the player. To avoid getting jumpscared by them, the player must quickly put on the silly mask and wait for Silly to exit the office.
Devious
Devious' behavior is similar to Silly's - start on cam 1 and head to the player's office. Unlike Silly though, Devious goes from cam 1 to cam 3 instead of cam 2. Again, to avoid getting jumpscared by them, the player must quickly put on the silly mask and wait for Devious to exit the office.
Silnk/Shadow
Silnk - once again - acts similarly to Silly/Devious, but instead of going from cam 1 to only cam 2 or only cam 3, they can go from cam 1 to either, so the player must watch out for that. And again - the player must quickly put on the silly mask to avoid getting jumpscared by Silnk.
Bronze silly
Bronze silly chills on cam 3 and does nothing to the player. That is unless you don't wind up the music box, then Bronze silly will dissapear from cam 3 and go attack the player. There is no coming back after They leave cam 3, so the player must keep the music box winded up at all times because the mask won't work on Bronze silly.
Shapeshifter silly
Shapeshifter silly doesn't show up on the earlier nights and starts appearing from night 4(?) and onward. They're really fast and don't instantly appear on cam 1, but after some time has passed from starting the night. After shapeshifter silly appears tho, they'll go from cam 1 to cam 2, from cam 2 to cam 3 and from cam 3 to cam 4. The office changes it's appearance completely when they're in it with the player, being very bright cyan and having some of shapeshifter silly's forms on the walls. Simply putting the silly mask on will save the player from them.
Keisha
Keisha - although having a settable level of AI in the custom night - will do nothing and chill with the player in the office. Oddly, the code of the game reveals that she has 20 AI in custom night set by default (while having 0 in every other night) and would use Shapeshifter silly's jumpscare sprites and sound.
Unused content
Cam 5 and cam 6
It seems that there were plans for a cam 5 and 6, but they were scrapped. The reason for their removal is unknown.