According to Infil’s superb fighting game glossary, “footsies” is defined as:
“A complicated, often nebulous term that refers to the battle for controlling the space in front of you, often by using good pokes. In essence, you are trying to get to a range you like, while trying to deny your opponent getting to a range that they like. How you do this varies wildly based on the game, but it often involves using strong crouching kick attacks to pester your opponent as they are trying to walk around. This dance of playing mind games with your feet is the source of the term’s name.”
All fine and dandy. Playing footsies means measuring the space between you and your opponent, while trying to slowly, but surely, find an opening and keep them at a range where your options are better than theirs. What, one might ask, happens when someone takes this concept and builds a whole game around it? Well, the result is FOOTSIES — Rollback Edition, developed by HiFight, also known for his extensive coverage of fighting game tourneys and just-frame analysis of key matches!