Hyper-crosslinked polymers (HCPs) are receiving great attention due to their high specific surface area, allowing them to offer high performance in many different applications. However, most of the time, their synthesis requires hazardous and time-consuming protocols, making their implementation and scaling up difficult. To overcome this problem, a relatively old technology such as mechanosynthesis (MS) has gained renewed interest as a greener and faster technology to produce HCPs, which involves much lower energy consumption during the reaction process. In this review, the latest advances on the performance of HCPs based on MS protocols are compiled and analysed, subdivided into those based on Friedel-Crafts alkylation, Scholl coupling reactions and other less common procedures. An analysis of MS versus solvent-based protocols regarding the twelve principles of green chemistry is also reported, as well as a section including a summary of the most recent applications of HCPs. Finally, the use of bio-based precursors for the formulation of HCPs is discussed, thus pooling knowledge for a greener, faster and more widely applicable future development of HCPs.