I am planning on creating my own version of Risk in such a way that we can play it with 7 persons. For this I am planning to create my own map with a local theme.
What kinds of ratios/parameters are common in games with fewer players (e.g. countries per player, armies per turn)? Based on these, what kind of modifications do I need to make to the map (number of countries / connections between countries or continents) to make it suitable for 7 players? Or is the game playable with the current map and 7 players?