LineBlockTap is a defensive reaction game. Straight lines fly in from random screen edges, and tapping places a brief shield that can stop them. Successful blocks score points. Any line that crosses the playfield unblocked counts as a mistake, and three mistakes end the game. Early lines arrive slowly and one by one, but higher scores raise flight speed, spawn rate, and how many lines appear together at odd angles. Place shields in their path early, cover the busiest approaches first, and keep pressure low as waves intensify. Timing and placement decide long survival runs.