Wally Walrus' island is a bright treasure, and only the shining light in the lighthouse keeps the water rats away from its shores. Wait, what's this? The light has gone out?! Now the rats have set sail for the island in their boat – they're not stupid water rats, mind you – and it's up to you and your fellow builders to ward them off. To do this, players in Wasserratten in Sicht! will construct additional lighthouses brick by brick by rolling the right combinations of colors on the dice available to them. Can they get the lights to shine in time and keep the rats from overrunning the island and snacking on Wally's whiskers? Wasserratten in Sicht! includes a competitive variant.