Build 1 was the "Original" Dead Circus
It was the first version of it on Gamejolt (and ever shown).

The Original Story is as follows:
"Your Job is simple...
You blend in with every other employee at that old restaurant and you try to find evidence of The Murder.

You play as Matt Collins, a Junior Detective trying to solve a Missing Persons Case
In the Fredbear's Location, Dayshift Employee by Day And Detective by Night."

And Its Original Gameplay Idea was:
"The game is a Slice of Minigame esque adventures during the Day and the Sit & Survive Gameplay the Night brings.

Day: You go undercover as Andrew Baker, A Young Adult in need of some extra cash to kickstart his Life, You wander around the Pizzeria Cleaning, Repairing, And Helping Customers.

Night: After Hours you take the Nightshift, Gathering Information about The Murder and Finding Clues, All while trying to survive the Decaying Robots that wander the empty halls."

It was a decent Idea, but I didn't fully enjoy it.
It ended up being replaced by Build 3 (The Current Gamepage) I won't reveal my ideas for Build 3 just yet, but I can say that it will be better.

Credits for the models:
Models by YourOgrelord & RealFailz
Textures from the TRTF5 Pack v3 Release
Edit by Me.