These are the changes in version 0.3:

• Small bug fixes
• Only one person is pushed at a time
• A person falling can push another one, creating a domino effect
• Random colors for NPCs
• More characters
• Babies! (don't worry, they are not harmed by the gas)
• The Hero now prioritizes saving children and women first, then elder people, and then the rest (as long as they have their hands up)

What's planned for future versions:

• Items to pick up
• NPCs that can push the player and other NPCs
• More sounds and music
• A Super Villain?