When Operation Flashpoint launched in June 2001, it was one of the most ambitious games I'd ever played. One of the earliest military simulators, for me it was significant for being an open world game before the concept of open world games really existed.
Operation Flashpoint's intensely simulated combined-arms warfare took place across massive, freely explorable islands, all at a time when most other first-person shooters had barely crawled out of their corridors. You could drive tanks, fly helicopters, or command entire squads of soldiers. You could even lie down. It was janky. It was ugly. It was harder than a steel-plated honey badger. But it was also light years ahead of its time.
