Then there were shows like Person of Interest, which slowly morphed from network procedural to one of the best sci-fi shows on television. If you're really into hard sci-fi and find these shows too mainstream, I've included some hard sci-fi gems that have long been forgotten. While I have long preferred light sci-fi shows, I have gotten more into the hard sci-fi genre. 'Devs' (2020)A Deep Dive Into Free Will and Tech DominanceThe sci-fi thriller miniseries Devs starring Nick Offerman is one of the most underrated sci-fi shows of the 2020s. Odyssey 5 remains one of those forgotten sci-fi shows that hard sci-fi fans should check out if they haven't already.