: Trigger gas canisters, spiked flora, and destructible bridges to take out groups without wasting ammo.

: Use "grenade jumps" or "rocket jumps" to reach high platforms, though this risks your own health.

: Use elevators, falling platforms, or heavy crates to squash zombies and robots.

The standout mechanic is the "well-developed destructible physical world". Instead of just shooting enemies, you can:

There are several ways to play Zombotron, ranging from the original Flash versions to the modern PC remake: Review: Zombotron (Steam) - Defunct Games