A huge trove of ancient MS-DOS games are now available at the Internet Archive, with in-browser DOSbox emulation and metadata.
Jason Scott: "this will be our biggest update yet, ranging from tiny recent independent productions to long-forgotten big-name releases from decades ago."
The hot areas for me are the immediate post-Amiga era (Alone in the Dark, Crusaders of the Dark Savant, Discworld, Princess Maker 2, I Have No Mouth And I Must Scream) and all the weird homebrew … and, of course, Microsoft Adventure.