Bad Time Simulator

🎮 What is Bad Time Simulator?

Bad Time Simulator is a fan-made game inspired by the Sans boss battle from Undertale — known as one of the most difficult fights in indie gaming history. This browser-based experience lets you simulate the entire Sans fight, complete with moving bones, lasers, and those iconic gravity attacks.

💬 “You’re gonna have a bad time…” — and the game lives up to that promise.

⚔️ Game Objective

Survive Sans’s relentless attacks and deplete his HP before your soul is crushed. This simulator perfectly recreates:

• 💀 The fast-paced patterns
• 🩸 The poison-style damage system (KARMA)
• 🧠 Reflex-based dodging
• 🎵 The legendary soundtrack: Megalovania

🕹️ How to Play Bad Time Simulator

Basic Controls:

• Arrow keys or WASD – Move your soul (heart)
• Z/Enter – Select
• X/Backspace – Cancel
• Mouse (menu only) – Navigate options

💡 You’ll spend most of the fight inside a tiny box dodging dozens of attacks — precision is everything.

🔥 Game Modes

This makes Bad Time Simulator perfect for both casual fans and hardcore Undertale veterans.

🌐 Where to Play Bad Time Simulator

Play it online for free:

• jcw87.github.io – most popular version
• bad-time-simulator.com – mirror version
• Some versions are available via downloadable EXE files on fan forums (use caution)

✅ No download required
✅ Free to play
✅ Works on most modern browsers (Chrome, Firefox, Edge)

🧒 Is It Safe for Kids?

Yes, but here are a few notes:

• 🎮 Gameplay is non-violent, but intense
• 📈 Difficulty may frustrate younger kids
• 👨‍👩‍👧‍👦 Best for ages 10+ who are familiar with Undertale

No ads, no account needed, and no data collection — safe to play in school or at home.

🎵 The Soundtrack: Megalovania

No Sans fight is complete without the iconic “Megalovania” theme. The simulator includes:

• 🎧 Full soundtrack
• 🔁 Looping mode
• 🧠 Sound-based reaction timing

Fun fact: Megalovania is one of the most remixed songs in video game history!

🧠 Tips to Beat Sans in Bad Time Simulator

• 🟥 Stay calm — panic leads to mistakes
• ➕ Learn the blue soul mechanics (stay still to pass through blue bones)
• 🎯 Use practice mode to master individual attacks
• 🧪 Don’t memorize — learn to react
• 🩸 Watch out for KARMA (damage over time)

💡 Pro Tip: Focus on learning the patterns, not speed-clicking.

🧩 Is It Canon?

No. Bad Time Simulator is fan-made, not part of official Undertale content. However, it is an extremely accurate recreation of the real Sans fight from the game’s Genocide route.

Other platforms

Play Store (Android)

📝 Final Thoughts: Should You Try Bad Time Simulator?

If you’ve always wanted to fight Sans without replaying the entire Genocide route of Undertale, this is your chance.

✅ Free
✅ Challenging
✅ Funny
✅ Accurate recreation of an iconic moment

Whether you’re a hardcore Undertale fan or someone who just wants to see what the hype is about, Bad Time Simulator is an intense, fun, and unforgiving experience — just the way Sans likes it.an experience. With its blend of nostalgia and terror, it stands out in the horror game genre.

Is Bad Time Simulator free?

Yes, it’s 100% free and playable online in your browser.

Does it work on mobile?

It’s playable on some mobile browsers, but best on desktop for smooth control.

Is it official?

No – it’s a fan-made game, not developed or endorsed by Toby Fox (creator of Undertale).