The plan is for something like a social party game, played online via the browser. The "small world" in my idea is Earth. Players are aliens trying to conquer Earth. The mechanics are like this: * Players can pick a secret role before the game, giving them particular powers or alternate victory conditions * Aliens take turns to move, one planet at a time * Alternatively your alien UFO could gather resources at that planet * Some planets are trading posts, allowing you to buy stuff there * Some planets are surrounded by space debris, which aliens may need weapons to clear * Aliens can also attempt to use weapons on other aliens, or buy shields - if an alien "dies", they lose everything and respawn at their home planet * To win, players must move to Earth with a super weapon * If Earth gets suspicious about aliens trying to conquer them, Earth will build a defence shield within a few turns, at which point everyone loses - so aliens will want to avoid moving past Earth early