Game Introduction
Bad Time Simulator is an intense fan-made game based on the iconic Sans boss fight from Undertale. Known for its extreme difficulty, this game tests your reflexes and determination in a bullet-hell style battle. With pixel graphics and fast-paced action, players must dodge attacks and survive wave after wave of challenging patterns. Fans of Undertale will recognize the soundtrack, style, and energy that make Bad Time Simulator a uniquely tough experience.
How To Play
Use the arrow keys or WASD to control the heart-shaped soul and avoid the incoming attacks. Every wave of bullets and obstacles must be dodged with precision. There are no attacks from your side—it’s pure survival. Your goal is to last as long as possible without running out of HP. Reaction speed and timing are everything.
Game Features
– Faithful recreation of the Sans boss fight from Undertale
– Pixel-art style graphics and iconic music
– Bullet-hell gameplay with increasing difficulty
– Pure survival experience—no combat attacks
– Available in multiple difficulty modes including Practice and Endless
Game Tips
– Stay calm and focus on movement patterns
– Learn the timing of each wave for better survival
– Use Practice Mode to study attacks
– Avoid unnecessary movement—precision is key
– Try Endless Mode only after mastering the basics
Try More Game
Love difficult games? Challenge yourself further with Friday Night Funkin’, Five Nights at Freddy’s 3, and Geometry Dash.
Who Created This Game?
Bad Time Simulator is a fan-made project inspired by Toby Fox’s Undertale. The game was created by fans as a tribute to the challenging Sans battle and is available to play in-browser thanks to various independent developers.