My late-night brain loves the kind of twisty, personal-science thrill ride that 'Dark Matter' delivers, so when I'm hunting for similar reads I look for books that scramble identity, choices, and the physics-of-possibility. If you want the mind-bending pacing and the emotional stakes, start with 'Recursion' by Blake Crouch — it’s like a sibling to 'Dark Matter' in tone and in that same urgent, page-turning cadence. It leans more into memory and the societal fallout of tech that lets you relive and rewrite your life.
For a quieter, more philosophical spin, 'The First Fifteen Lives of Harry August' by Claire North is golden: reincarnation with a sci-fi twist, people who live their lives over and over, nudging history in subtle ways. It hits that ethical core about what we’d do if we could redo things. Then there's 'Replay' by Ken Grimwood, which predates a lot of modern takes but feels eerily familiar — a man relives his life again and again and the emotional truth is brutal and addictive.
If you like alternate-history energy mixed with personal regret, try 'All Our Wrong Todays' by Elan Mastai; it’s witty and wistful and explores consequences of altering timelines. Leaning toward the intimate and speculative, 'The Midnight Library' by Matt Haig and 'Life After Life' by Kate Atkinson both play with lives unlived, but with very different moods—one cozy and contemplative, the other sprawling and literary. I tend to pick one of these depending on whether I want breathless sci-fi or a reflective, bittersweet ride.