[dallbee]

I had Chessmaster 8000 and the engine behind it was always really good at mimicing realistic playstyles. It had presets, and you could control things like pawn weakness, willingness to trade, king safety, and preferred pieces.

Modern chess engines usually have a notion of "contempt". I've found that if you turn contempt way up and limit the number of concurrent lines, in combination with adjusting the target rating, you can get a reasonably good approximation of real play. At casual (< 2100 maybe?) levels of play, this simulates the human tendency to make blunders while fixating on a plan.