This is a destruction sequence in Assassin's creed: Rogue where I did 70% of the visual FX. Fire, smoke, exploding windows, falling tower, tiles, woods and rocks collapsing on the ground. It was really fun to make. You have to keep in mind that it has to fit for the video games restrictions. Smoke can't stay on screen forever, we re-use textures, particles are not lighted, etc. The overall feeling that everything is falling appart is still there. Enjoy!