There's the wiki. Just look for each of the games you wish to play on the wiki.
And, well, you CAN get a cheaper Haswell than the cheapest i3, but you have no hyperthreading and no L3. Also, if you go too far with it (celeron), then you lose most of your cache size and are on one core. I'd recommend a really high Haswell Pentium if you can't afford the cheapest Haswell i3, but I don't know which one it is. Pentium has too many strange numbers for my head.
And, well, you CAN get a cheaper Haswell than the cheapest i3, but you have no hyperthreading and no L3. Also, if you go too far with it (celeron), then you lose most of your cache size and are on one core. I'd recommend a really high Haswell Pentium if you can't afford the cheapest Haswell i3, but I don't know which one it is. Pentium has too many strange numbers for my head.
in a perfect world we would all be piles of sand with no ability to form coherent bodies of body