Nightfall Horde is a 2D zombie survival shooter where you face relentless waves of undead attacking from multiple directions at once. Using only your mouse to move, aim, and fire, you must stay sharp and keep moving or get overrun fast. The threat never stops — zombies flood in from the top and both sides simultaneously, making every second count.

What keeps the pressure high is how quickly difficulty ramps up between levels. Shotgun power-ups scattered across the screen are your best friend — grabbing one at the right moment can clear a packed screen of zombies instantly. Mutant bosses shake things up just when you think you have a rhythm, forcing you to adapt your movement and shot timing. The scoring system rewards aggressive play, so sitting back and playing safe will only get you so far.

If you enjoy free online zombie shooting games, top-down survival shooters, or 2D horror action games with no download required, Nightfall Horde delivers exactly that in a tight, browser-based package. It suits players who like single-player arcade challenges, wave-based survival mechanics, and beating their own high scores. Fans of fast mouse-control shooters, zombie wave games, and browser horror games will find plenty of replay value here. Jump in, survive as long as you can, and see if you have what it takes to be the last one standing.