Games Like Bad Time Simulator: More One-Boss Fights and Bullet Hell
Once Sans is down, these are the games on this site that scratch the same itch: one fight, no mercy, and a pattern you can learn.
Bad Time Simulator Blog
Guides written by people who have died to the first bone gap more times than they would like to admit: every attack, practice mode, the blue soul and what to play next.
How to Beat Sans: A Practice Plan for Bad Time Simulator
A repeatable way to go from dying in the opening gauntlet to a full clear, built around practice mode, one attack at a time.
Every Sans Attack in Bad Time Simulator, and the Safe Answer to Each
The fight is a fixed sequence. Here is what each attack looks like the moment it starts, what it wants you to do wrong, and where the heart should be instead.