Metal Gear Solid 2 : Substance is an expanded edition of Metal Gear Solid 2: Sons of Liberty game has surely met up to its expectations.
Unlike other game titles of the same genre it's basically a whole big movie (using FMV sequences) which you be a part of by taking control of a character. You could say it's an interactive movie.
Whilst controlling the character through the game, you are commanded to do certain objectives which require thought and creativity. There's no need to worry about it though because there are different difficulties to suit your playing ability.
I particularly enjoy the realism in the game of the 3D environment i.e. graphics, colours, backgrounds, sky, ground, buildings, characters/characters costumes and also the relation of it to real life and the things you can do, I enjoyed that factor because it captured my attention and motivated me to play it.
I liked the storyline because of its plot and the twists. It can seem slightly confusing at first, but you get the hang of it.
What I thought was the best though was apart from the story mode of the game, there's also many different modes and unlockable features to be explored, which is great cause it leaves you with hours and hours of entertainment.