customizable grid sizes2 4-in-a-row strategy game1 7 theme variations1 adaptive difficulty ai1 brain-teasing matrix game1 classic vertical connect game1 color-matching board game1 competitive block duel1 educational stem game1 endless block stacking1 falling block physics1 family-friendly block puzzle1 family-friendly strategy game1 fast-paced quick play1 hardcore block mode1 html5 block puzzle1 html5 connect four1 mobile-friendly block rotation1 mobile-friendly connect 41 multiplayer disc-dropping challenge1 neon block theme pack1 oversized grid mode1 play vs ai computer1 quick-thinking drop challenge1 rotating block challenge1 row-clearing marathon mode1 tetris-style strategy game1 tournament-style connect four1 two-player logic puzzle1