Bad Time Simulator

Bad Time Simulator is a fan-made indie game inspired by the popular RPG Undertale , specifically recreating the challenging boss fight against Sans. Developed by Joe Zeng, the game focuses entirely on testing the player's reflexes, timing, and concentration through a fast-paced combat system. Unlike traditional role-playing games, there is no exploration or story progression—players are immediately thrown into an intense battle scenario.

In the game, players control a small heart that represents their soul and must dodge a variety of incoming attacks, including bones, lasers, and gravity-based traps. Each attack pattern is carefully designed to mimic the original fight while adding unique twists that increase difficulty. The minimalist graphics and retro-style design contribute to its nostalgic, but the gameplay itself is notoriously difficult.

bad time simulator is widely known for its extreme challenge, making it popular among players who allowing skill-based games and speedrunning. It also offers different modes and customization options, players to adjust difficulty or practice specific attack patterns. Overall, the game serves as both a tribute to Undertale and a standalone experience that pushes players to their limits.