Sonic the Hedgehog
Components: scrolling background, main character, enemies, power-ups (rings, boxes), platforms.
Skills required / taught: Reflexes, decision making
Object: smash enemy robots, avoid pitfalls, rescue woodland creatures, reach the end of the level

About the Game

In the game, Sonic has to prevent Dr. Robotnik from collecting the six Chaos Emeralds in an attempt to rule South Island. The player controls Sonic as he traverses six zones, each of which is split into three "acts". At the end of the third act of each zone, the player faces Dr. Robotnik in one of his vehicles.

How it Works
The gameplay centers around Sonic's ability to run, jump, and roll at high speeds. Levels include springs, slopes, high falls and loop-de-loops. In many places throughout the series Sonic would form into a ball and players would get to experience pinball like gameplay.

Thought Bubble
Power-ups - Items which can increase a characters abilities, be it offensive attacks, defensive abilities, or granting extra mobility. Your game might include power-ups to allow the main character have more powerful attacks or be able to attack from a greater distance, take less damage or be able to avoid damage altogether, or pick up keys or access cards to be able to access other areas of the game.

Scrolling Background - You might consider adding movement to the background of your game, this allows you to introduce new items into the view and keep the player engaged.