1. Core Trick-Taking Gameplay Engine

The foundation of the project was a reliable and fully automated game logic system, including:

• 4-player turn-based gameplay (clockwise)

• Dealer rotation each round

• Clear indication of the active player

• Automatic trick winner detection

• Lead suit enforcement

• Power suit override logic

• Trick winner automatically leads the next trick

All gameplay rules are enforced programmatically, eliminating manual errors and ensuring fair play.

2. Round-Based Bidding System

Each round begins with a structured bidding phase where:

• Players predict how many tricks they will win

• Zero bids, underbids, and overbids are supported

• Bid constraints adjust per round

• Visual prompts guide players through bidding

This phase establishes strategic intent and feeds directly into scoring logic.

3. Accurate Scoring, Bags & Penalty Logic

A complete scoring system was implemented based on the client’s official ruleset:

• Exact bid → +10 points per trick

• Overbid → (10 × bid) + bags

• Underbid (set) → −10 × bid

• Zero bids → special success/failure handling

• Bag accumulation across rounds

• Automatic bag-out penalties every 5 bags

• Support for negative total scores

This ensures the digital experience mirrors real card-game behavior.

4. Power Suit System

Each round introduces a randomly selected Power Suit:

• Displayed clearly at the center of the board

• Visible to all players

• Overrides lead suit when played

• Fully integrated into trick winner logic

This adds tactical depth while remaining visually intuitive.

5. Minimalist, Focused Game UI

The MVP UI was intentionally designed to minimize distractions and support shared-device play:

• Central gameplay board

• Player areas positioned around the table

• Live bid, score, and bag indicators

• Subtle visual cues for the active player

• Light celebratory effects (e.g. confetti moments)

The layout is optimized for portrait mobile gameplay and pass-and-play usage.

6. Local Multiplayer (Single Device)

Phase 1 focuses entirely on local multiplayer, featuring:

• One device, four players

• No accounts or logins

• No AI or online dependency

• Clear turn indicators

• Card-hiding logic to prevent cheating

This ensures smooth, social gameplay without technical friction.

7. Expandable Architecture for Future Phases

The game was architected with long-term growth in mind, enabling future upgrades such as:

• Full visual card play

• Trick and card animations

• Round history tracking

• Enhanced scoring breakdowns

• Session pause & resume

• Online multiplayer support

Game state, rounds, and scoring systems are cleanly separated to support scalability.

Result

✔ Fully playable 4-player card game MVP
✔ Rules-accurate trick-taking and scoring system
✔ Beginner-friendly gameplay flow
✔ Scalable technical foundation
✔ Delivered within a constrained startup budget

The result is a solid, authentic digital card game ready to evolve into a polished, animated experience in Phase 2.

Tech Stack

• Flutter (iOS & Android)