Paper io condenses competitive strategy into a single continuous movement. You glide, draw, and close loops to convert open ground into your color, all in real time against players trying to do the same. The mechanic is tiny but the decisions are big: expand wide or turtle? Snipe or survive? You die if anyone clips your trail mid-draw, so every incursion is a calculated gamble. Games are short, mechanical skill matters, but so does patience and map-reading.