Levolution, much like Bifidus Digestivum, is a term which means different things to different people. For instance, to me it means '*vomits entire guts out*', while DICE interpret it as meaning 'Battlefield 4 features more dynamic multiplayer maps'. Language is brilliant like that. DICE demonstrate this increased dynamism in the game's latest trailer, which shows a player manipulating car alarms, light switches and doors to get the edge/lose the edge in battle. It's nifty stuff. But that's nothing compared to the "massive game-changing events" like, um, flooding the whole bally map.