The game idea is a blue bubble that falls on planet and starts to spread. The locals are trying to burn out the goo, so you control the flow direction, accumulation, temperature and other goo's properties to overwhelm the defenses. Some articles for goo simulation:
Good overview:
http://software.intel.com/en-us/articles/fluid-simulation-for-video-games-part-1/
Some algorithmics:
http://www.colinbraley.com/Pubs/FluidSimColinBraley.pdf
