Monopoly on the NES.
The AI would spend all it's money to either get a monopoly, or break up a monopoly.
Just get him to spend all his money on either and every other property would go to auction which you could win for $1.
There was also a baseball game on the Radio Shack TRS80. As soon as you got a man to 3rd base, you just steal home and the pitcher would send it right down the middle for an easy home run hit.
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