+ Fat Every Second

+1 Fat Every Second is one of the original and most successful games in the "+1 stat every second" Roblox simulator genre, developed by the verified group Mega Obby Games! and launched in January 2023. Players passively gain fat every second, collect food from the ground for bonus fat, run parkour courses to earn Wins, collect and upgrade pets, battle other players, and travel across multiple worlds. With nearly 300 million visits and over 10 million favorites, it is one of the most favorited games in the entire incremental simulator subgenre - and its 94.8% approval rating from over 400,000 votes confirms its lasting appeal.

The game's strength is the variety it layers on top of a simple idle foundation. Passive fat accumulation runs in the background while players choose between active parkour runs for Wins, picking up food spawned on the ground for fat bursts, and PvP battles where accumulated fat doubles as combat power. Worlds unlock at fat milestones and each introduces new content, keeping the game fresh well beyond the first few hours. The progression ladder is extensive, with fat milestones tracked from 500 FAT all the way to 1,000,000 FAT and Win milestones from 1 to 1,000:

• 💰 Passive fat gain - base rate of +1 fat per second, doubled to +2 for Roblox Premium subscribers
• 💼 Food pickup - physical food items spawn on the ground and award bonus fat when collected during each session
• 🏆 Parkour - obstacle courses that award Wins on completion, tracked from 1 to 1,000 with badge milestones
• ⚔️ Battles - PvP combat against other players where your fat stat determines combat power
• 🗺️ Worlds - multiple distinct game zones that unlock at fat milestones, each with new content and challenges

Pets are hatched from eggs and upgraded to boost various stats. The Unlock Trading pass enables peer-to-peer pet exchange between players - a meaningful social economy layer. Auto Rebirth automates the prestige process, and the Rebirth badge marks the first major reset milestone. Inviting friends to your server gives a passive boost to fat gain, creating a social incentive on top of the idle progression loop.

+1 Fat Every Second defined the template that dozens of later "+1 every second" games would follow. It remains the genre standard for combined passive/active design, and players who enjoy this format will find a natural next step in +1 Fat Per Step and +1 Fat To Fit.