The original concept for the stage was introduced in specific versions of the 2 Stage to which there was no Fiber Optic sign, nor TV screen to separate Chuck and the other band members. In early 1993 the first version of this stage, the decor and the character's outfits had different changes from the final version. These new changes included renaming the band to "Munch's Party Time Band" and giving Helen yellow hair (a staple she would soon take with this early version) and a roller skate costume, Munch, a tie, as well as retiring his hat, Jasper, a more punk rock look, and giving Pasqually a baseball outfit.
The first public 1-Stage was introduced in 1993 with the first installation at the Irving, Texas restaurant. It is a traditional CEC Stage that, like its name suggests, is a compact show that is restricted to the size of only one stage, as well as having simple bots to which were named "Cyberamics" in the early 1980's. The animatronic arrangement here is not unlike the other CEC Stages; Chuck E. Cheese, Helen Henny, Munch, Jasper, and Pasqually lined up from left to right in that order. The stage is unlike usual Cyberamic MMBB stage, as it has a specific backdrop that implements two brick walls with either a fiberoptic sign or an MMBB logo sign (behind Chuck and Pasqually), as well as a more colorful version of the original rooftop buildings, originally seen on previous MMBB-styled stages. The size of the show itself takes up very little of the Showroom floor, creating a simple and yet effective form of animatronic entertainment. An interesting thing to note with this stage is that some, not all, 1-stages have a unique feature, a turntable beneath the Chuck E. animatronic that rotates when the walkaround Chuck E. comes out for live shows, or to mingle with the young guests. The feature was meant to avoid the confusion of seeing two Chuck E's, one on stage and one on the floor. The turntable, thus, solves this problem by creating the illusion that the animatronic Chuck E. came off the stage.
Newer stages would soon rearrange around the different props as featured in the final version that appeared at Irving. Soon, these brand new stages would take back the original outfits the characters wore earlier in the 90's, as well as dropping features like the turntable. Irving, after their Phase 4 remodel, would also go through these changes.
As of February 2019, 47 1-Stages remain in operation in the United States and Chile.
- Before its closure in 2018, the 1-Stage in North Wales, Pennsylvania lacked the Wink, the Munch's Make Believe Band sign, and the brick backdrop behind Pasqually.
- The 1-Stage in Pearl City, Hawaii no longer has the Wink and a flat-screen TV has been put in its place. It also has a no longer-operational and functioning Chuck E. Cheese turntable.
- The 1-Stage in Lo Barnechea "Delano", Chile no longer features the Wink. It is also the only known 1-Stage outside of the United States, along with Lo Barnechea "12.352", Chile.
- The 1-Stage in Manchester, Connecticut's Helen Henny animatronic now has New London, Connecticut's (now closed) old Helen mask.
- The 1-Stage in Attleboro, Massachusetts had the last Tuxedo outfit before it was removed in 2014 and replaced with an Avenger outfit. The 1-Stage also has a unique mask on Mr. Munch and it has the Munch‘s Make Believe Band sign between both Jasper and Pasqually.
- The 1-Stage in North Dartmouth, Massachusetts has Helen wearing shoes with pink shoelaces, Mr. Munch wearing shoes with purple shoelaces, and a unique mask on Pasqually.
- The 1-Stage in Newington, Connecticut has recently removed the Munch's Make Believe Sign, Helen, Jasper, Pasqually, and Chuck E. have unique masks, and it is the only 1-Stage in New England to have a 2-Stage background.
- The 1-Stage in Durham, North Carolina has a unique valence, and the stage is tiny.
- The 1-Stages in Bel Air, Maryland, Newington and North Wales, have 2-Stage props and backdrops despite the locations never having 2-Stages.
- The 1-Stage in Columbus "Soldano", Ohio's brick backdrop behind Pasqually reads "Pasqually's Amateur Hour Live" while the "Amateur Hour" part is in a different font.
- The 1-Stage in Murrietta, California is the last to have a Wink with the "In Pizza We Trust" slogan.
- The 1-Stage in Chicago "Fullerton", Illinois has side to side curtains, a Helicopter Light, and is the last 1-Stage to have Munch's Cap with his name on it
- The 1-Stage in Tucson, Arizona had a working turn table until their closure in October 2014. Another thing to note was Jasper's Pizza Time Theatre shirt that was transfered over from the location in Jackson, Missisippi.
- Although the 1-stage, 2-Stage, and Road Stage are all very similar, there are often some additional differences with the band itself. For instance, sometimes Munch sports a personalized hat, sometimes no hat at all. Sometimes Jasper has got wrinkle-like facial marks on his face, sometimes he has none. Lastly, older restaurants sometimes have Jasper play a banjo, rather than his infamous "Flying Cheese" guitar.
- The "Wink" is a fiberglass decoration above all the CEC stages (and the 3-Stage as well), created in a shiny gold likeness of Chuck E's face. Coinciding with the playing showtape, the face will occasionally wink, often before an intermission or during another key moment in a showtape. The "ribbons" on the sides of Chuck E's head read at one time, "In Pizza We Trust", a slogan that also appeared on tokens, cups, and the sort. Today, most are repainted with red and white paint, while some still have "In Pizza We Trust".