In KH, there are pre-programmed areas where enemies will spawn (a flash of light, a cloud a darkness, puff of smoke) and boom, there's your fight. That's what I meant by "encounters" just happen. The games even chain together battles by spawning more enemies in the same spot once the first ones are cleared. You generally don't get to see the enemies ahead of time. It's more or less an ambush every time.
But just watch YouTube if you really want to see what I'm talking about.
But just watch YouTube if you really want to see what I'm talking about.