Not just one-mission microtransaction bullshit; I'm talking about full, 50% of the original content packages. The Age of Mythology expansion or Lord of Destruction for D2 are good examples, but the practice has fallen out of vogue over the years. I'm sure someone has that graphic of the Mona Lisa being sold in progressively more chunks, but there have to be at least a handful of game makers that still do this every once in a while.
Pic related; the original Sunless Sea was great if you like WORDS, and the expansion pack is definitely worth it from what I've played so far.