Dipped back in during 2020 Pandemic with Derek and Zane in multiplayer. We mostly did the the PvE mode defending against the hordes. Had a lot of fun. Made me want to try the single player again especially since Derek and that kid he was watching were just getting into it. I had finished the single player campaign when it first came out and thought it might be the best single player fps game since half-life and then the multiplayer just added more awesome.