ElectroCity is an online computer game that lets players manage their own virtual towns and cities. It's great fun to play and also teaches players all about energy, sustainability and environmental management in New Zealand.
This looks like a very interesting science resource site with games, animations and graphics for science teachers. It seems particularly geared toward bio teachers. You need to create a free account to access some of the resources.
Many science educators advocate conceptual or qualitative physics, the notion that physics is best taught not by mathematical formulae, but rather through experiments, labs, demonstrations, and visualizations which help students understand physical phenomena conceptually. Consistent with the Physics First curricular movement, this perspective maintains that a deep, fundamental understanding of physics provides a solid basis for future science learning.