Be it finely-tuned strategy or guns-blazing first-person shooting, and everything in between, you're sure to find something that tickles your modification fancies here. I've gathered my favourites below, including a number of honourable mentions after the core lineup, which cover a wide range of genres.
Due to their often exceptional standard, pulling this list together was a daunting task. Total conversion mods are arguably the most impressive of this remarkable bunch. Be it superficial tweaks, or highly ambitious overhauls, the work of creative hobbyists is often wonderful - and anything which is capable of breathing new life into our most treasured games is surely worth celebrating. And if you've been following the best mods lists I've been compiling for RPS over the last several months, I dare say you feel somewhat the same.