The parts of your game like your avatar and enemies

• Space
• Components
• Mechanics
• Goals

What guides the player on how the game should be played

• Space
• Components
• Mechanics
• Rules

The actions in the game like jumping or collecting

• Space
• Components
• Mechanics
• Goals

What players try to achieve to win the game

• Space
• Components
• Mechanics
• Goals

The look and feel of a game comes from this

• Space
• Components
• Mechanics
• Goals

The sprites are examples of 

• Space
• Components
• Mechanics
• Goals

An example of a mechanic is

• Mario
• Donkey Kong
• Mario jumping
• the barrels

An example of a goal is

• collecting specific number of points
• defeating specific number of enemies
• finding a key and unlocking a lock
• any of these can be goals

You must reach the goal box before time runs out  is an example of

• space
• component
• mechanic
• rules

The backdrop and music of a game are examples of 

• space
• mechanics
• rules
• components