The brand commissioned artists from 3D Joe & Max for the activity, which saw its sweets emerge from a party popper.
The 4m x 5m creation took more than 40 studio hours to create, and it was completed in front of a live audience.
Members of the public were invited to add pieces from the range to the art work, and there were also opportunities to catch and eat the product.
Alison Satterthwaite, brand manager at Haribo UK said: "The design developed by 3D Joe and Max really captured the tang taste party experience that many people describe when they talk about Tangfastics. The art looked amazing and shoppers had great fun on the day; they helped us to add the final touches to the design and many enjoyed having their pictures taken with it."
Joe Hill, artist and founder of 3D Joe & Max, added: "When we were asked by Haribo to help bring the taste of Tangfastics to life we knew that creating this with product pieces would add a new dimension to our design.
"You could say we have gone back to using the very same principles that were used by the Romans when they created the very first 3D illusions, but instead of small mosaic tiles, we have used sweets. Each product piece was used to enhance the colours within the design and on the day it took around eight hours to complete, all thanks to shoppers who helped throughout the day."
In other Haribo news, the brand sent a group of bunnies out onto London's streets in the lead up to Easter this year.
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