simple series is a series of simple games. like you have an idea, say, lets make a fireman game. but its not reasonable to make a huge budget fireman game. so you make a fun and simple game and sell it for like 15-20 dollars and slap a number on it. thats basically the simple series.
but dont knock it! several good games like ONEECHANBARA, earth defense force, THE BEETLE KING and topgear: downforce were all simple series games. they are not shovel ware and have been around since the ps1 days. i recommend them and usually have at least 2 on my card at all times. this is a series of "escape the room" games in one cart. and its the sequel to simple ds series vol 27 THE misshitu Kara no Dasshutsu. dont dismiss cause they are cheap. the fireman game is mindblowingly fun. also the zombie crisis and The Sensha are a sure hit.
from wikipedia:
The Simple series are a number of series of budget-priced console games, published by Japanese company D3 Publisher and developed by a variety of companies, covering many systems. The price of the games in yen (not including tax) is included in the title of the series - for example Simple 2000 is about 2000¥.
The games are usually characterised by their distinctive package design featuring artwork surrounded by a black border, with the game's title (usually prefixed by "The" in English) in a plain white font. The series name and volume are also displayed prominently.
The early games in the PlayStation Simple 1500 series were generic interpretations of common video game themes, such as mahjong, tennis or racing. However the various series now cover many more original and unusual titles in addition to those based on concepts. Since the games are almost universally created on a low budget with a short development time, developers are able to experiment to some extent with titles such as The Daibijin, which has attracted attention largely due to its central premise of a giant bikini-clad woman attacking a city, rather than any gameplay or graphical merits.
Simple Series - wikipedia.org
(also... umm..........i'm so totally stuck on this game.... i have the phone, the note, and the charger and battery..... now what????)