The first article I read was "Formal Abstract Design Tools" by Doug Church. I found article really hard to read. It had a lot of technical jargon that I had a hard time understanding. But it did given me a bit of an inside look at some tools of game design like intention, perceivable consequence and story and how they can work well together in certain games types and not so in other games types.
https://www.gamasutra.com/view/feature/131764/formal_abstract_design_tools.php
The second article I read was "A Look at Negative Game Mechanics" by Josh Bycer. I quite liked this article. It was much easier to understand and follow. It talked about game mechanics that are designed to force the player to spend money to play the game, from arcade machines in the nineties to free to play and social media games and why such mechanics should be avoided.
https://www.gamasutra.com/blogs/JoshBycer/20120903/177027/A_Look_At_Negative_Game_Mechanics.php
The third and final article I read was "The Paper Chase Saving Money Paper Prototyping" by John Henderson. The article was going over what game designer, Giles Schildt, said to game design students at a talk at the community college. I liked the article and the idea of designing a game prototype on paper before moving onto actually making the game, since it'll make the design easier to understand for everyone and that it's easy to scrap and change.
https://www.gamasutra.com/view/feature/2690/the_paper_chase_saving_money_via_.php
(A picture of a designer working on a game.
Found here.)