Bad Time SimulatorBad Time Simulator is a fan-made battle game inspired by Sans from Undertale. Test your dodging skills and survive the most intense fight!
Bad Time Simulator
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🎮 What Is Bad Time Simulator?
Bad Time Simulator is a fan-made battle game inspired by the legendary fight against Sans from the game Undertale. In this game, you’ll need lightning-fast reflexes, precise movements, and tons of patience as you try to dodge wave after wave of attacks in one of the hardest boss fights ever created.
It’s not about attacking — it’s about surviving.
🎮 Start your challenge now at 👉 Bad Time Simulator
🔥 Why Bad Time Simulator Is So Popular
✅ Based on the Iconic Sans Fight – Relive the hardest battle in Undertale
✅ Fast-Paced Dodge Mechanics – Bullet hell meets pixel precision
✅ Multiple Modes – Normal, Practice, and Custom
✅ No Downloads Needed – Play instantly in your browser
✅ Unblocked & Lightweight – Great for school or quick sessions
If you love a challenge, this game is for you. But be warned — you’re gonna have a bad time 😈
🕹️ How to Play Bad Time Simulator
- Go to: https://badtimesimulator.org
- Choose Your Mode:
- Normal Mode – Full battle experience
- Practice Mode – Try specific attack patterns
- Custom Mode – Create your own battle scenario
- Use the Arrow Keys to move your soul (the red heart)
- Avoid All Attacks – Lasers, bones, blasters & more
- Survive as long as you can – Timing is everything!
💡 Pro Tip: Stay calm and memorize patterns — spamming keys won’t help here.
🎯 Game Features
- 💀 Iconic Sans fight remade in full detail
- 🔁 Infinite retry system
- 🧠 Pattern-based bullet hell gameplay
- ⏱️ Smooth performance, no lag
- 🎧 Includes the legendary “Megalovania” soundtrack
📱 Can You Play Bad Time Simulator on Mobile?
Yes, but it’s more difficult due to the fast movement required.
📱 Mobile – Playable, but best with an external keyboard
💻 PC/Mac – Recommended for full control
🕹️ Chromebook – Runs great in browser
👉 Visit https://badtimesimulator.org to play instantly on any device.
📲 Is There an App for Bad Time Simulator?
There’s no official mobile app, but:
- You can play it directly from the browser
- Add to your home screen on mobile
- No login or install required
The game is built to run smooth and fast even on lower-end devices.its endless fun and challenging gameplay anywhere, anytime.
🏁 Final Thoughts – Why You Should Play Bad Time Simulator
Whether you’re a die-hard Undertale fan or just love a hardcore reflex challenge, Bad Time Simulator offers one of the most intense and satisfying experiences in browser gaming. Survive long enough, and you’ll feel like a true gaming legend.
Is Bad Time Simulator hard?

Yes! It’s one of the hardest fan-made games online. But practice makes perfect.
Is it free to play?
100% free. No sign-up, no downloads. Just visit badtimesimulator.org and start playing.
Is this an official Undertale game?
No. It’s a fan-made tribute, not affiliated with Toby Fox. But it’s loved by the community!




































































good!
thanks