Raising the Bar (out of print for several years now so I recommend just finding yourself a .pdf) is a book about the development of Half-Life 2 and bits of Half-Life as well. Geoff Keighley has also written a few “The Final Hours” books about the development of Portal 2, Titanfall, and Half-Life: Alyx, though I think all are digital-only.
Raising the Bar (out of print for several years now so I recommend just finding yourself a .pdf) is a book about the development of Half-Life 2 and bits of Half-Life as well. Geoff Keighley has also written a few “The Final Hours” books about the development of Portal 2, Titanfall, and Half-Life: Alyx, though I think all are digital-only.