To start playing Killer.io, simply visit the game's website or platform where it is hosted, click on the 'Play' button, and you will be transported into the Halloween party setting where you can begin your mischievous murder spree.

The primary objective in Killer.io is to stealthily eliminate as many guests as possible during the Halloween party. You must carefully dispose of the bodies to avoid detection by other partygoers and security. The more guests you eliminate without getting caught, the higher your score will be.

Yes, you can play Killer.io with friends! While the game doesn't offer direct multiplayer modes, you and your friends can join the same server and compete to see who can rack up the highest score by eliminating the most guests without getting caught.

Killer.io does not feature traditional levels or stages. Instead, it is an ongoing experience where you continuously try to outsmart the partygoers and security. As you play more, you may unlock new characters or items that can enhance your gameplay.

If you get caught by the security or partygoers in Killer.io, your murderer character will be exposed, and you will lose the game. It's crucial to stay hidden, use distractions, and dispose of bodies properly to avoid detection and continue your murderous spree.

Yes, Killer.io features a global leaderboard where players can see how their scores rank against others from around the world. Strive to climb the leaderboard by eliminating more guests than your competitors and avoiding detection.

Improving your stealth skills in Killer.io involves practicing careful movement, using shadows and hiding spots effectively, and timing your attacks. Pay attention to the behavior of partygoers and security to predict their movements and avoid suspicion.

While Killer.io primarily focuses on stealth and strategy, there may be occasional power-ups or special items scattered throughout the party environment. These can provide temporary advantages, such as faster movement or enhanced invisibility, to help you eliminate more guests without being detected.