Nepton

Nepton is a puzzle/RTS hybrid (the RTS elements being really, really light, mind you) where you play as a divine entity conquering a world covered in water. There's some onboarding in the game, but in case that's lackluster here's the short of it:

Each level has a bunch of enemies and enemy territory
Kill all enemies and conquer all their land blocks to beat a level
Gain territory by first raising a block of land, then building a Hole-in-Ground on it and using your creatures to smack enemies
The War Statue will grant permanent buffs to your creatures' max health and damage
You need Power to raise land and build structures. Gain Power by defeating enemy creatures (2 per kill) and capturing enemy land blocks (10 per block)
Right-click on land blocks to order ALL your creatures to go there - and attack everything they encounter.
The creatures have a mind of their own and once they see an enemy they'll attack without hesitation. You won't be able to order them around when they're fighting.
The creatures aren't exactly smart so you may have to guide them around the islands a bit.