game-design

name	game-design
description	Game design principles — core loop, GDD, player psychology, difficulty balancing, progression

Game Design Principles

Tham khảo từ agent-skills-hub/game-development/game-design.

1. Core Loop — The 30-Second Test

ACTION → FEEDBACK → REWARD → REPEAT

Genre	Core Loop
Platformer	Run → Jump → Land → Collect
Shooter	Aim → Shoot → Kill → Loot
Puzzle	Observe → Think → Solve → Advance
RPG	Explore → Fight → Level → Gear
Racing	Drive → Drift → Boost → Win

2. Game Design Document (GDD)

Section	Content
Pitch	One-sentence description
Core Loop	30-second gameplay
Mechanics	How systems work
Progression	How player advances
Art Style	Visual direction
Audio	Sound direction

3. Player Psychology

Type	Driven By
Achiever	Goals, completion
Explorer	Discovery, secrets
Socializer	Interaction, community
Killer	Competition, dominance

Reward Schedules

Schedule	Effect	Use
Fixed	Predictable	Milestone rewards
Variable	Addictive	Loot drops
Ratio	Effort-based	Grind games

4. Difficulty Balancing — Flow State

Too Hard → Frustration → Quit
Too Easy → Boredom → Quit
Just Right → Flow → Engagement

Strategy	How
Dynamic	Adjust to player skill
Selection	Let player choose
Accessibility	Options for all

5. Progression Design

Type	Example
Skill	Player gets better
Power	Character gets stronger
Content	New areas unlock
Story	Narrative advances

Anti-Rationalization

Excuse	Reality
"Core loop tự nhiên fun, không cần design"	Game không fun = không ai chơi
"GDD viết xong là xong"	GDD cần update liên tục
"Balancing sau, code trước"	Sai balance từ đầu → rewrite cả hệ thống

Red Flags

• Core loop không fun trong 30s đầu
• Difficulty không có curve
• Progression không reward

Verification

• Core loop defined + test fun
• Difficulty curve (easy → hard)
• Reward schedule (ít nhất fixed + variable)