Quadrop

Five-in-a-row on a 13×13 board — but pieces fall in from all four sides. If no one gets five, whoever has the most four-in-a-rows wins.

QUADROP is a deceptively simple strategy game built on two unusual rules. THE GAME On a 13×13 board, players take turns dropping black and white pieces. First to line up FIVE in a row — horizontal, vertical, or diagonal — wins. THE GRAVITY Pieces don't land just anywhere. Each move must be linked to a side of the board by an unbroken line of pieces along its row or column. It's like four-sided gravity pulling stones in from every edge. Openings are constrained, the midgame is sharp, and every move shifts what's reachable next. THE TIEBREAK If the board fills without anyone making five in a row, the winner is whoever has more four-in-a-rows on the board. Equal counts is a true draw. The rule changes everything: even when no five is possible, every position is still being played for. FEATURES · Four AI difficulty tiers — V.Easy, Easy, Medium, Hard · Local two-player on a single device · Per-side stats (your record as Black and as White, kept separate because the game is highly asymmetric) · Pause and resume Computer-vs-Computer games at any time · Configurable AI pacing · Press-and-drag piece placement with live cursor preview · Designed for iPhone, portrait No accounts. No ads. No tracking. No network calls. Just the game.