If on a budget get the g4560, 95% the performance at nearly half the price of the i3, although you should get a B250 or H270 motherboard.
If you can afford more then Ryzen 3 which has just launched looks excellent for budget gaming. Personally the i3 & i5 don't look as good as the Ryzen options at the moment, only if going g4560 or i7 would I consider Intel at the moment.