I have built several budget i3-21xx gamers with assorted boards. Most of them are no longer available (at least not at Newegg). The two below are still sold and were good solid boards for me and are providing their owners lots of happy gaming.http://www.newegg.com/Product/Product.aspx?Item=N82E16813157236http://www.newegg.com/Product/Product.aspx?Item=N82E16813130592
You need to look for a board that has the features you want/need and is comatible with the processor you have choosen. In your case any 1155 socketed board should be fine. When you see a board you like, go to the manufacturer's website for that board and check the information they provide. (Newegg provides a link on the 'details' page to the board's site.) Especially check the CPU list to see if you will need a later BIOS when you get the board. In the case of the i3-2120, that's highly unlikely.
Btw, the i3-2120 is a screamer all out of proportion to its cost when it come to gaming.