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开发者大战 是一系列Paradox员工、开发者联机游玩EU4开发中版本的流媒体视频。开发者联机体验新版本，以帮助他们发现和修复bug，并提前为玩家展示一些新内容。一些早期版本的开发者大战仅在Paradox内部进行，而未曾在 Twitch 或 Youtube 上传、播出过。视频的平台和形式多年来一直在发生变化，但一直保留了一般由两人主持、解说，并有10-20名开发者游玩的传统。目前，开发者大战一般在每周三的欧洲中部时间15:00（北京时间22：00）开始，在Twitch平台上进行直播，并在之后进行剪辑并上传至YouTube。
Emperor - March 2020 (Season 13)
- Paradox Forum Link - https://forum.paradoxplaza.com/forum/threads/eu4-dev-clash-12-emperor-wednesdays-15-00-cet.1352228/
- YT Playlist - https://www.youtube.com/watch?v=dIePEA6ri3c&list=PL_3rLv22kp6SKSxOWOzQwNLw2g7x2ZOru
- Twitch Ep 1 - https://www.twitch.tv/videos/565404770?t=1h07m12s
Anbennar (Fantasy Total Conversion Mod) - August 2019 (Season 12)
- 6 player, 6 week mini-dev clash using the Anbennar Fantasy Mod
- Paradox Forum Link - https://forum.paradoxplaza.com/forum/index.php?threads/eu4-the-anbennar-clash-livestreamed-tuesdays-at-15-00-cest.1237438/
- Anbennar Steam Mod Link - https://steamcommunity.com/sharedfiles/filedetails/?id=1385440355
- Twitch Ep 1 - https://www.twitch.tv/videos/473032462
Dharma (Baltic Elephants) - May 2018 (Season 11)
- Paradox Forum Link - https://forum.paradoxplaza.com/forum/index.php?threads/eu4-dev-clash-11-baltic-elephants-tuesdays-15-00-cet.1100243/
- YT Playlist (49) - https://www.youtube.com/watch?v=LQz9vZ_c420&list=PL_3rLv22kp6Sa2cizreeomNNk2JCHtl9K
- Long Game Short Playlist (12) - https://www.youtube.com/watch?v=gyn06phnj-k&list=PLdRq-FAtDg6zW538zRW-dARcJuubI4f_O
Rule Britannia - March 2018 (Season 10)
- Paradox Forum Link - https://forum.paradoxplaza.com/forum/index.php?threads/eu4-dev-clash-10-rule-britannia-tuesdays-15-00-cet.1074281/
- YT Playlist (29) - https://www.youtube.com/watch?v=HcYMCJlp3gk&list=PL_3rLv22kp6T7hLsOa4UDGflIhWC0UROD
Happy Three Friends (Cradle of Civilization) - Nov 2017 (Season 9)
- Paradox Forum Link - https://forum.paradoxplaza.com/forum/index.php?threads/eu4-dev-clash-9-happy-three-friends-tuesdays-15-00-cet.1052952/
- YT Playlist (35) - https://www.youtube.com/watch?v=dTOW6yNDCKA&list=PL_3rLv22kp6TuMrmQA0RpBqMZD9rV3fda
Historical Oddity - May 2017 (Season 8)
- Paradox Forum Link - https://forum.paradoxplaza.com/forum/index.php?threads/eu4-dev-clash-8-1444-a-historical-oddity-tuesdays-15-00cest.1017404/
- YT Playlist (52) - https://www.youtube.com/watch?v=VFZFZto9nLQ&list=PLqRhPbyFDQWgwfVRR2ysCGq3oY6OrQzJn
Little Trouble in Big China - Jan 2017
- Paradox Forum Link - https://forum.paradoxplaza.com/forum/index.php?threads/the-developer-multiplayer-clash-every-tuesday-at-15-00cet.994245/
- YT Playlist (37) - https://www.youtube.com/watch?v=MwFDQnXXa7s&list=PLqRhPbyFDQWj7sIw2plXEqEXGZG5W4t6J
Rights of Man - Aug 2016
- YT Playlist (45) - https://www.youtube.com/watch?v=5BSsR-P48Rw&list=PLqRhPbyFDQWhgbaIMq6kskjxEkobCKkaL
- Long Game Short Playlist (10) - https://www.youtube.com/watch?v=oAcQveGbASQ&list=PLdRq-FAtDg6yNObHD-q0gciZc9Pg1Mit_
Cossacks - Nov 2015
- YT Playlist (55) - https://www.youtube.com/watch?v=tPu59BSxBvk&list=PLqRhPbyFDQWip7OcP1He2A9HTfp623zzm
- Twitch Ep 1 - https://www.twitch.tv/videos/20489362
Wealth of Nations 2014
- Twitch Ep1 - https://www.twitch.tv/videos/30219411
Conquest of Paradise / Wealth of Nations 2013/14
- Twitch Ep 1 - https://www.twitch.tv/videos/30219768
- Highlights - https://www.youtube.com/watch?v=mzU8mpd6ltQ