soth is it anything special in rules than normal risk?
Storm AnA is a turned base war game, you have 5 countries: rusia, UK, US, Japan and Nazi Germany. who are devided into "Axis and Allies"
and they make war. the world is devided into territories like risk. Tho here you get money for each territory you conquer, not just continents (would take too long)
with that money you can build new troops
you have different kind of troops: soldiers, armour, fighter planes, bombers, submarines, transport ships, aircraft carriers and battleships. it each has its own defence and attack number. and then you do battle.
Militairy objective of the Allies is to conquer Berlin and Tokio, Militairy objective of the Axis is to conquer either Moscow and/or London or/and Washington.
it is a bit more complicated but very cool, tho pretty hard and it takes a long time