In Gray Matter you will be helping two characters - Samantha Everett and David Styles - in solving a mystery of strange, almost paranormal activities. Both of them keep diaries, but in fact all they contain is a record of the dialogues - it can be found in the inventory, on the bar in the upper part of the screen.
Manipulating items looks a bit differently than in most point & click games. Clicking an item with the LMB in the inventory will result in a comment referring to it or a zoom in case of fragments of puzzles and documents. The latter ones can be magnified with the mouse wheel. To combine two items, you have to click one of them with RMB in the inventory - it will land in a symbolic hand (upper right corner of the screen) - and afterwards LMB on the other possessed or external item.
During the game it's worth to check your progress (P or a special icon in the left corner of the inventory) on a special screen which will display which missions are still ahead of your character and to what extent are they completed. Apart from missions needed to complete a given chapter, there are also additional activities, the completion of which is optional.
There is an in-game map (M or a special icon in the left corner of the inventory), which apart from letting you move quickly (without having to move between location) will also give you important information. The colour in which the name of a given location is written indicates if there are any main missions left to complete (golden letters), bonus missions left (silver letters) or if there's nothing there for you to look for (gray letters).
A special screen is used for planning magic tricks, on which you mark the moves which Sam should make. You can also have a look at her magic book (on the inventory bar) by pressing LMB (it will appear on the left) to check if you're doing everything in the right order.
Traditionally, active points are accessible by pressing space, double pressing LMB speeds up the character's movement and a single click scrolls the dialogues.
The construction of the guide is adjusted to the mission received by the characters. Most of them can be completed at any order and at the same time, but sometimes you have to complete a certain task before you can move to the next one. If you can't perform one of the actions described in the guide, make sure you've completed all the previous ones.
Red has been used for marking items, blue for premium actions and bold marks solutions and important information.
Katarzyna "Kayleigh" Michalowska (www.gry-online.pl)
Translated to English by Jakub "cilgan" Lasota