Custom mode

Custom mode is the only way to play the game in eaiser/harder levels, other than those preconfigured in the campaign.

It is the the alternate option for the Campaign mode.

Creating a Custom Game
At the start screen:
 * 1) Click the "Choose Level" button;
 * 2) Select an "empty" game slot;
 * 3) Click "Play";
 * 4) Click "New Custom Game";
 * 5) Choose the parameters for the new game (listed below);
 * 6) Click "Play".

To access this same game again:
 * If it was the last game played, just click "Play" at the start screen.
 * If it was not the last game played:
 * Click the "Choose Level" button;
 * Select the wanted game slot;
 * Click "Play".

Customizable parameters
The following 6 variables are accessible for the player at the moment he/she creates a new custom game.
 * World size;
 * frequence of weather events;
 * world type (forest, snow, desert and underground) ;
 * tech mode (sandbox and tech tree) ;
 * game mode (normal and permanent death) ; and
 * difficulty level.