As a hero penguin (what other protagonist character would a free game have, hm?) you must create, destroy and move blocks of ice to destroy enemies and extinguish demonic hell fire.
Each level has one or more solutions and the simplistic "physics" requires you to think ahead, one mistake and a restart might be the only option.
Once you get into it, thinking ahead will come more natural. Who knows, you might even submit your own, really difficult level and let others try to find the best solution?