A subreddit dedicated to the game Prison Architect, developed by Introversion Software and ported to console (Xbox and Playstation) and mobile platforms (Android and Apple) by Double11 Studios and Paradox Interactive, respectively.
This is a sub-reddit for discussion, links, etc. about any game published by Paradox Interactive or their partners. This includes games like Europa Universalis IV, Europa Universalis III, Darkest Hour, Hearts of Iron 3, Crusader Kings, Mount and Blade, Magicka, Hearts of Iron 4, Grand Strategy Games, and many more!
Also, some keywords: EU4, CK2, EU3, Vic2, HOI3, DH, CK, Vic, PDX, M&B, HOI4, GSG.