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Game Bad Time Simulator preview

Bad Time Simulator

Bad Time Simulator

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9.2(60 votes)

Bad Time Simulator

Bad Time Simulator, also known as The Sans Fight in Undertale is infamous for its high difficulty level, contrasting with Sans' laid-back attitude earlier in the game. This fight is the final boss of the Genocide Route and is known for its challenging mechanics, unique battle system, and emotional weight, as it ties into the game's themes of choice and consequence.

For an even bigger challenge, more options and improved gameplay, make sure to try our Bad Time Simulator 2 too!

How to play Bad Time Simulator?

In the battle, Sans uses a variety of complex attack patterns, requiring precise movements and timing. The key to success is pattern recognition, quick reflexes, and strategic use of your healing items. Unlike other fights in Undertale, your attack sequences are straightforward as Sans dodges every attack until his final move.

To finish the boss fight requires intense reflexes and memorizing the patterns. You feel like you're going to have a bad time. Get ready for the Bad Time Simulator.

What are the controls for Bad Time Simulator?

  • Arrow keys / WASD to move your soul during attacks
  • Z to select/interact
  • X to cancel or go back in menus
  • Enter to start the game and interact with certain elements


  • Intense and challenging boss battle
  • Unique attack patterns requiring strategy and skill
  • Memorable soundtrack enhancing the battle
  • Requires mastery of the game's mechanics
  • A test of endurance, patience, and reflexes

Release date

December 2023





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