This document summarizes and analyzes features of four existing video games - Zelda II, Undertale, Final Fantasy, and Toonstruck. It identifies common features such as being made before 2000 and by Nintendo. Aspects the author will include in their own game are standardized NPC designs from Zelda II, Undertale's side-scrolling view and hidden areas, Final Fantasy's battle mechanics, and dialogue systems from Toonstruck. A bibliography lists details on the four analyzed games.