Lost Bus is a post-apocalyptic zombie shooter where you defend a heavily modified school bus against waves of mutated survivors after a devastating nuclear war. Your only allies are your loyal companion Sasha and whatever upgrades you can bolt onto your bus before the next attack. Every round brings bigger, nastier mutants that push your defenses to the limit.

The game keeps you on edge with unpredictable enemy scaling - some zombies have grown to monstrous sizes that make standard tactics useless. You'll need to juggle bus modifications, military support calls, and raw shooting skill to stay alive. Resource management matters as much as aim here. Knowing when to upgrade your vehicle versus when to hold your position is the difference between surviving another night and getting overrun. Luck plays a role too, keeping each run feeling different.

Lost Bus is a solid pick for fans of free online zombie defense games, survival shooters, and anyone who enjoys wave-based monster shooting action. If you search for free zombie bus survival games, online monster shooter games no download, or apocalypse defense shooting games browser, this one delivers chaotic and challenging gameplay without costing a penny. Players who enjoy tower defense mechanics blended with direct shooting combat will find plenty to keep them grinding for that next upgrade.