The common denominator among them is that all deserve some serious attention from fans. Some make the experience more realistic while others are purely fantastical in their settings. These types of mods add and/or change so much of the vanilla content that it often feels like playing a completely different game. The total conversion mods are arguably the best of the bunch. RELATED: Mods That Were Even Better Than The Original Game From bug fixes to UI enhancements, mods have all the bases covered. The Steam Workshop is teeming with a plethora of top-notch content that adds even more replayability to a game that is already quite addictive. Games developed by Paradox Interactive fit hand-in-glove with mods.