Bad Time Simulator, often known as the Sans Fight Simulator, is an online fan-made game inspired by Undertale. In this challenging browser-based experience, players face off against Sans in a recreation of one of the most difficult battles in gaming history. The simulator is designed for those who want to test their reflexes, improve their dodging skills, or simply see how far they can last against Sans’s relentless attacks.
The game captures the intensity of the original Undertale battle, complete with fast-paced mechanics, complex attack patterns, and iconic dialogue. Unlike the full Undertale adventure, Bad Time Simulator focuses entirely on the fight itself, allowing players to jump straight into the action without any story interruptions. This makes it an ideal way to practice or experience the infamous “bad time” encounter without playing through the entire game.
Players must survive waves of attacks that include bones, blasters, and tricky movement challenges. Each attempt sharpens reaction time and timing, making progress feel rewarding even if victory takes many tries. The simulator has become popular among fans not only for its accuracy but also because it offers a fair chance to learn and retry, something that is much harder to do in the original game.
Bad Time Simulator is more than just a fan project, it’s a test of patience, persistence, and skill. Whether you are an Undertale veteran revisiting the toughest battle or a newcomer curious about why this fight has become so legendary, the simulator delivers the same mix of frustration and fun that made the original encounter unforgettable.
