How do you transform a shopping center’s 20th anniversary from corporate milestone into nationwide celebration?

Anniversary campaign design for Citycenter Celje’s 20th milestone required more than corporate nostalgia. We transformed a routine shopping center anniversary into nationwide celebration through strategic branding and Slovenia’s largest ball pit installation with 400,000 colorful spheres.

Client: Citycenter Celje

The challenge

Twenty years deserved more than polite acknowledgment and anniversary discounts. We needed something audacious enough to make parents drive across Slovenia—an experience that would transform shopping into playing.

Our approach

We built Slovenia’s largest ball pit as our centerpiece, then let those 400,000 spheres dictate everything else. Ball pit colors became brand colors, installation energy drove poster compositions, playground logic guided our professional execution.

Outcome

The campaign generated nationwide buzz and hosted over 500 giveaways, turning a corporate milestone into genuine community celebration.

Campaign identity · Environmental graphics · Digital materials · Event branding · TV advertising · Social media · Animation

Slovenia’s largest ball pit became a mall’s anniversary campaign.

The Why started with rejecting corporate anniversary formulas. Twenty years of Citycenter Celje deserved more than nostalgic timelines and discount promotions. The What became clear: transform shopping into playing through 400,000 colored spheres arranged as Slovenia’s largest ball pit installation. The How reversed typical campaign logic — instead of designing around brand colors, we let the ball pit’s spectrum determine our entire visual system. The Values prioritized audacity over politeness, nationwide draw over local traffic.

The Design emerged from material constraint. Four hundred thousand spheres create their own color palette, their own photography, their own social media content. We built the brand system backward from this physical centerpiece, letting installation logistics drive visual decisions rather than the reverse. The Story became parents driving across Slovenia not for shopping but for an experience their children would remember longer than any purchase. This mall anniversary succeeded because it forgot to behave like a mall anniversary.