Basically when it rains the water runs down to the lowest possible blocks and fills up (this could form lakes and such). The amount of water from each drop should be carefully monitored to avoid having the surface of planets covered completely with water. Also I think it would be nice if water could slowly filter through blocks (filtering faster through some blocks than others, but generally quite slowly). This way underground lakes can be formed and the volume of a lake is determined by what material forms the base and how much it rains on the planet and it is always changing naturally. I'm not too sure how the deepest part of a planet is going to be formed, e.g.Hell in Terraria or Bedrock in Minecraft. But if the water filters all the way to the bottom it could simply disappear this way planets won't slowly be filling up with water completely. Please tell me what you think of this idea and any suggestions. Thanks.
i think this is a wonderful idea although maybe to make it a little more interesting you could have a chance for one raindrop to make a 1 in 8 chance to fill up one forth of a block, because it will probably rain for a long period of time
Yes i agree, other wise the surface of the planet would be all water haha, ill edit it into the description. That's true, It's what i said in the brackets but you explained it better so i'll change it. Thank you both for the support and feedback.