You may have missed, some years ago, this article I wrote for GameCareerGuide about game analysis.

Here's the introduction:

With this article I want to suggest a new way to analyze gameplay and game dynamics, using a visual diagram, easy to create and read.

In the last years many articles have been written with the aim of carrying out a precise gameplay analysis (e.g. MDA Framework or Game design patterns), but no one managed to present a brief and accessible method to represent and communicate their results.

My analysis (called in brief GD:EL) rests upon a decomposition of fundamental gameplay elements and a subsequent reconstruction within an ordered structure founded on layers. The ultimate aim of this process is to understand how game tokens, dynamics and player psychology are linked together.

Here's a sample diagram of PacMan deconstructed:

Pacman analysis

It's not a perfect tool, and I currently disagree with some of its statements, but it can give you some help to understand how games work.

Read the full article here.