The phrase "best mods" refers to modifications made to something that enhance its performance, appearance, or features, and are considered superior or highly recommended.
Sentences with «best mods»
We thought this would result in better mods for everyone, both free & paid. (wolfsgamingblog.com)
All these traits and features, however, allow at best modest forecasts of schizophrenia's prognosis. (scientificamerican.com)