Infectious Smile

Infectious Smile is a horror survival game on Roblox by laughablehaha built around the darkly comedic premise of infectious happiness. Players survive in environments scattered with infection pads - stepping on one transforms your character into a smiling infected entity that spreads the condition to others by touch. With 1.22 billion visits, 2.09 million favorites, and 1,500-3,000 concurrent players, it is one of the most-played horror properties on the platform and continues receiving active seasonal updates into 2026.

The core survival loop runs across a rotating map selection and several distinct game modes. Players find and use scattered weapons to survive while avoiding or containing the infected:

• ⚔️ Main survival mode across 20+ maps including Abandoned House, Aquarium, and Boxing Ring
• 🏠 Build and Survive (BaS) mode - construct block defenses, place Alarm systems, and use Smile Sensors
• ⚔️ Elimination Mode - a more competitive variant of the survival format
• ⚔️ 100 Players mode - a large-scale server variant for chaotic mass play
• 💎 Seasonal content - Christmas, Halloween, and event maps with exclusive weapon skins

The weapon selection spans melee (Bat, Branch, Katana, Knife, Spear) and ranged (Shotgun, Handgun) with seasonal Snowflake skin variants. The "Obtained All Weapons In One Life" badge - awarded to just 47,843 players - is one of the game's most respected challenges. The "Everyone was Infected!" badge has been earned by 3 million players but represents a roughly 0.013% win condition, making it one of Roblox's most celebrated community landmarks.

Infectious Smile sits alongside games like The Mimic and Survive the Killer in the Roblox horror-survival genre. A comprehensive Fandom wiki at infectious-smile.fandom.com documents every map, weapon, skin, and game mode in detail.