So this is the idea I'm currently working on ....
It's sort of a war game / board game hybrid. The players have various pieces (soldiers) that move around the board, and are used to attack their opponents' pieces. The players can gain control of resources, and use them to manufacture buildings to claim territory, or to boost the stats of the soldiers (attack/ defence/ special abilities). The soldiers have different classes and ranks, with differing stats and abilities and there are numerous special abilities that allow the soldiers to do different things (double attacks.. move faster, that sort of thing). Players can form alliances, trade resources, etc.
Essentially, the aim is to use your army to defeat your opponents' armies. You gain territory and resources, giving you advantages in the battle. You need to use a lot of strategic thinking with regards to planning attacks, committing soldiers to maneuvers, trying to control resources, deciding which resources to use for which reason, expanding territory - and keeping it!
There's a lot more to it (how combat works, board design / terrain / point scoring / bonuses / hidden objectives etc), but that's pretty much the basics.
