Cooking Roulette

Tea themed event concept - a feature for Merge Mansion

The Challenge

This case study showcases my design process for Cooking Roulette, a cozy, tea themed event concept for Merge Mansion. Players spin to collect ingredients, mix them into tea blends, and claim rewards through a warm, polished, and tactile interface designed to feel like a real in game event.

The challenge was to design a complete feature for a limited time spin event called Cooking Roulette. The brief provided an asset library from Metacore with in game components, icons, and design references from Merge Mansion, but left the creative direction open.

To give the feature its own identity, I decided to introduce the teapot as the central interactive element, a friendly, cozy metaphor that fit naturally within the Merge Mansion universe. The teapot became the heart of the experience, representing both the player’s progress and the magical act of “mixing” ingredients.

Players spin to collect ingredients, mix them by spending energy, and unlock unique tea blends and rewards. The deliverables included full wireframes, UI layouts, animation states, and reward moments.

Design Goals

Design anchors for Cooking Roulette, aligned to Merge Mansion’s cozy visual language.

Create a warm, cozy, and collectible interface inspired by Merge Mansion’s visual world.
Balance clarity and delight, guiding players naturally from spin → mix → reward.
Make ingredients feel tactile, rewarding, and alive through lighting and motion.
Build flexible UI components that could scale as a real, game ready system.
Integrate an original design concept (the teapot) that visually connects all steps of the experience.

My References

I studied Monopoly Go and Coin Master, both of which use spin mechanics to build anticipation and reward.

These insights helped me shape Cooking Roulette into something that feels both rewarding and cozy, replacing flashy mechanics with a gentler sense of progress and satisfaction. The teapot, in particular, became a way to express that emotional tone. Playful, calm, and tactile.

Monopoly Go inspired interaction loop for Cooking Roulette — From Monopoly Go, I drew inspiration for clean layouts and celebratory reveals.

Coin Master-inspired suspenseful pacing loop — From Coin Master, I focused on pacing. The feeling of suspense before each result.

User Flows & Wireframes

I began with grayscale wireframes to map hierarchy, readability, and pacing.

My goal was to keep the process simple: Spin → see ingredients → mix using energy → claim reward.

I explored multiple wireframe layouts to test hierarchy and call-to-action placement.

First wireframe draft for Cooking Roulette

Second wireframe draft for Cooking Roulette

Third wireframe draft for Cooking Roulette

Final flow wireframe for Cooking Roulette — Final flow highlights: Earned ingredients displayed clearly at the top, a focal teapot animation in the center, the Mix button on the right with energy cost attached, and a Spin Again option for quick replayability.

Designing the Spin→Mix→Reward Flow

Designing Cooking Roulette required several rounds of iteration, especially in shaping how the player transitions from spinning → mixing → receiving a reward. This sequence became the core of the feature, and I dedicated much of the process to refining the structure, hierarchy, and clarity across each step.

I began with very simple grayscale wireframes to map the essential journey: Spin → Reveal Ingredients → Mix (Energy Cost) → Reward → Recipe Journal

These early layouts focused purely on functionality. Where the teapot sits, how ingredients are displayed, and how the user progresses from one step to the next.

First design iteration for Cooking Roulette

As I moved into mid-fidelity wireframes, I iterated heavily on:

Across these versions, I tested multiple configurations to ensure the next step always felt obvious without crowding or overwhelming the UI.

Ingredient tile size and spacing
Mix button placement and visibility
How and where to attach the energy cost
Guiding the player naturally from action to action

Cooking Roulette second design iteration

Refining the CTA Hierarchy

One of the biggest UX challenges was deciding how to present Mix and Spin Again.

I explored several placements:

Under the ingredients
Inside a popup
Bottom-right with cost separated
Bottom-right with cost attached directly
Dual-CTA rows with both actions visible

Final Call to Action layout for Cooking Roulette — The final layout, positioning Mix on the right with the energy cost attached and placing Spin Again on the left, created the clearest visual hierarchy and felt the most consistent with Merge Mansion’s interaction patterns.

Layout & Structure

The teapot became the central storytelling element of the feature. A warm, familiar object that communicates mixing, discovery, and progress at a glance. I wanted it to feel both functional and character-like, matching the cozy atmosphere of Merge Mansion.

I explored many visual directions for the teapot, using an AI-assisted workflow to experiment with shape, lighting, lid positions, bases, and heat effects. Throughout the process, I kept the camera angle, environment, and countertop consistent so every state would feel cohesive when placed inside the UI.

Main illustration iterations for Cooking Roulette — I created several possible states (open, closed, boiling, mixing, reward) and tested how clearly each one communicated the player’s progress.

Final Illustration Designs

The final UI includes:

Main Screen – Spin and collect ingredients
Post-Spin Screen – Ingredient results, mix and spin options
Mixing State – Energy use and brewing animation
Reward Screen – Chest opening moment
Cooking Book – Collection of discovered blends

All screens share the same cozy tone, lighting, and structure for a seamless visual flow.

Final illustrations for Cooking Roulette — In the final version, I selected the three most intuitive states: open (default), spinning, and mixing. These provided the clearest feedback during the spin→mix loop while keeping the layout clean, warm, and visually focused.

Visual Language & Icon System

The art direction combines semi-realistic detail with soft, cozy charm. Each ingredient icon: Lavender, Chamomile, Hibiscus, Mint, Cinnamon, Lemon, and others, was created from scratch, inspired by Merge Mansion’s polished lighting and rounded shapes.

To ensure consistency:

All icons share a light beige background
Use smooth gradients, soft shading, and gentle highlights
Feel collectible yet readable at small sizes

Ingredients icons for Cooking Roulette — The result is a cohesive visual system that makes each ingredient look inviting and valuable, reinforcing the idea that even small moments (like a single spin) should feel rewarding.

Typography & UI Decisions

To ensure the feature felt fully integrated into Merge Mansion, I adopted the existing typography and button styles from Metacore’s asset library. These elements act as the visual foundation of the game, so keeping them intact preserved consistency and authenticity.

Around that foundation, I designed the rest of the experience from scratch. The frames, icons, teapot states, layout structure, reward cards, and all interaction flows were built to complement the established style while introducing a fresh, cozy aesthetic unique to Cooking Roulette. This approach allowed me to expand the visual language in a way that feels new, yet unmistakably part of the Merge Mansion world.

For the reward moments, I took the existing closed chests from the Metacore's asset library and redesigned them in an opened state to create a more celebratory reveal. Instead of simply reusing the original icons, I added lifted lids, warm rim lighting, sparkles, and subtle shading changes to make the chests feel alive and full of anticipation.

Redesigned reward chests with opened states

Additionally, I created optional recipe cards to give each tea blend its own story and description, adding a layer of charm and collectibility to the experience.

Custom recipe cards for Cooking Roulette blends

Final UI

Cooking Roulette was a chance to combine UI design, art direction, and UX thinking in one cohesive challenge. Working with real Merge Mansion assets taught me how to respect an established style while introducing new ideas that expand the world in a believable way.

Introducing the teapot as the feature’s core mechanic gave the experience its own visual identity, cozy, magical, and distinct, while staying fully aligned with the game’s brand. From icons to interactions, every design choice supported one goal: to make the feature feel alive, satisfying, and genuinely fun to use.

Final UI overview for Cooking Roulette — The final UI captures the full player journey, from anticipation to reward, in one cohesive visual language. Each step transitions naturally, supported by soft lighting, motion, and tactile effects.

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