João RiedoProduct Designer — Home
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Minigames · 2026

Exclusive Games Play4tune

I designed three minigames inside Play4tune’s gamification HUB: Roulette, Mystery Box and Scratch Card.

Role
Product Designer · end to end
Duration
Feb–Sep 2026
Platform
Mobile
Team
Me (design) + Product + Engineering

Screens in production

Each minigame from start to finish: purchase, play and reward.

Roulette

Buy a spin, watch the wheel turn and collect the prize.

  1. Roulette: Purchase
    Purchase
  2. Roulette: Play
    Play
  3. Roulette: Reward
    Reward

Mystery Box

Buy a box, open it and reveal what’s inside.

  1. Mystery Box: Purchase
    Purchase
  2. Mystery Box: Play
    Play
  3. Mystery Box: Reward
    Reward

Scratch Card

Buy a card, scratch it and find the prize.

  1. Scratch Card: Purchase
    Purchase
  2. Scratch Card: Play
    Play
  3. Scratch Card: Reward
    Reward

Challenge

The coins players earned in missions and tournaments needed somewhere to go besides the store: something quick and fun to play inside the platform itself.

Each minigame brought a different mechanic. The risk was ending up with three games that had to be learned from scratch, or that pulled players out of the retention loop instead of keeping them in it.

Solution

I designed all three minigames end to end, fitting each mechanic into a single flow and into the casino’s visual identity.

  1. One loop for three mechanics

    I made all of them follow the same sequence: buy, play, collect. Players learn the flow once, and only the core interaction changes from one game to the next.

  2. Prizes in view before buying

    On the purchase screen, I showed the cost in coins and the list of possible rewards for each game before the first tap.

  3. One tap from the HUB

    I placed the minigames right in the HUB instead of burying them in submenus, to keep the path between missions, tournaments and play short.

  4. Real interaction

    I designed the spinning wheel, the opening box and the scratch card as real interactions, not static screens, and ended all three games on the same reward screen.

Result

All three minigames went into production inside Play4tune’s gamification HUB, sharing the same flow, the same reward screen and the multi-tenant Design System’s components.

The numbers below describe the project’s scope, not business results.

minigames
3
screens, from purchase to reward
9
steps in every game
3
reward screen shared by all three
1