The obvious advice is that doing a Google
search for “free + (name of game)” will turn up some useful results. It will also turn up some scams, but that’s true of almost anything on the internet. But if online versions aren’t your thing, let’s break each game down.
Yahtzee: Essentially a game of rolling dice and trying to get combinations, all you really need to play Yahtzee is five six-sided dice, a cup, and some pen and paper. You probably have most of those lying around already, with the dice being the only real issue. So what you need to do is find your local Dungeons & Dragons group and ask them for some “D sixes,” then brace yourself. They’ll have plenty to loan or give you, but you’re going to have to listen to horror stories of how those cursed dice were no help to their epic-level paladins.
Cost: $0.00 and suffer 8 points of damage to your Sanity stat.
Connect Four: Basically Tic-Tac-Toe with gravity, I’ll admit it’s not convenient to build your own version of this game. But you can easily get it for far less than ten dollars if you check convenience stores. The one right across the street from my office had some Chinese bootleg version for sale on a toy rack, so I grabbed that and took it to the checkout counter. The clerk rung up my purchase, and I couldn’t help but respond with: “I’ll buy that for a dollar! Ahhh-hahahaha!”
Cost: $1.00 and a Robocop quote.