Game mechanics involve matching colors to clear paths for the Vikings. i found the physics quite fun and engaging.
Start by clicking to swing your club, breaking the multicolored bricks that block the ships. You must combine colors effectively to clear a path, watch out for the approaching arc of electricity that ends the game if it reaches you before the Vikings regain control of their vessel.
While playing, you click to make the Vikings swing their clubs at the bricks. The bricks multiply with every swing, which is kinda weird anyway, making the challenge harder as you try to match colors. The main goal is to clear a path to their ships before the electricity arrives, which is their only way to escape.
Quick tip: focus on color matching first then worry about speed. i discovered that saving swings for big clusters of bricks works better then random clicking. The mechanic where bricks appear after each swing is the main thing to watch. Time is critical because the electricity arc is coming fast.
Gameplay involves using clubs to smash bricks that block Viking ships. The main thing is that bricks appear after every swing, so you must match colors to clear a path. The electricity arc is a time limit that ends the game if you fail. The goal is to reclaim the ships by breaking through the barriers. The whole thing is a race against time and increasing brick density.