D.P.S. Zenbu, is, as the name implies, a complete collection of scenarios (total of 15) from all the previous D.P.S./Dream Program System series entries: D.P.S. D.P.S. SG D.P.S. SG Set 2 D.P.S. SG Set 3 Super D.P.S. No changes have been made to graphics or gameplay in any of the scenarios. As a bonus, the game also contains the 16th scenario, entitled Megumi's Story. The scenario is non-interactive (the player simply has to press a button to scroll the text) and depicts the first sexual experiences (some of them violent) of an innocent teenage girl.