The integration of offshore wind farms (OWFs) into the power grid using voltage source converter-based high-voltage direct current (VSC-HVDC) technology is a pivotal step toward sustainable energy generation and has gained significant attention due to its potential to enhance renewable energy utilization. Ensuring the reliability of VSC-HVDC-connected OWF clusters is paramount for grid stability and uninterrupted power supply. This work provides a comprehensive review that delves into the multifaceted aspects of reliability in VSC-HVDC-connected OWF clusters. This paper aims to analyze and synthesize the existing literature on the reliability aspects of VSC-HVDC-connected OWF clusters, providing a holistic understanding of the challenges, methodologies, and advancements in this domain. It highlights the critical topics covered, including system design, component reliability, maintenance strategies, fault tolerance measures, emerging technologies, limitations, and future research directions. The paper emphasizes the importance of addressing reliability challenges to advance the deployment of offshore wind energy, contributing to a greener and more reliable power grid.