Resident Evil 4 is free online game. Resident Evil 4 marks new chapter Resident Evil series. You'll rejoin Leon S. Kennedy six years after his first mission as rookie cop Resident Evil 2. Now US agent, Leon is top secret mission to investigate disappearance of president's daughter. As Leon, you must make your way to mysterious location Europe, where new enemies await. Take them down by using enhanced aim-and-shoot features and new action button.