What is Bad Monday Simulator?

Bad Monday Simulator is a fan-made, turn-based RPG inspired by Undertale with a surreal twist. Instead of a lazy Monday, you’re thrown into a nightmare where Garfield fuses with Sans to become Garfield Sans (or Sansfield). What starts as a parody quickly turns into a challenging bullet-hell battle that tests your reflexes, determination, and sense of humor.

Created by indie developers Lumpy, Spasco, and Polarial, this game mixes Undertale’s pixel RPG mechanics with Garfield’s absurd comedy. It’s free, fast to pick up, and delivers the kind of chaos that only a crossover meme could create.

Gameplay

Bad Monday Simulator keeps things simple but brutal. You step into the shoes of Nermal, who gets caught in a twisted timeline where Mondays don’t exist—and survival means facing Garfield Sans in combat.

  • Battle System: Turn-based fights infused with bullet-hell mechanics. You’ll dodge waves of attacks while finding the right moves to strike back.

  • Dialogue & Humor: Expect quirky banter, meta jokes, and dark humor that parody both Undertale and Garfield comics.

  • Multiple Modes: Choose from Normal, Hard, or the infamous Monday Mode, which starts you at 1 HP with no items.

  • Endings: Your choices matter. With six possible endings across different modes, every run feels unique.

It’s more than a meme—it’s a surprisingly tough challenge for anyone who loves fast reaction gameplay.

Features

  • Intense bullet-hell style boss fights against Garfield Sans.

  • Dark humor and unique parody dialogue.

  • Multiple difficulty modes, from chill to downright unfair.

  • Six different endings shaped by your choices.

  • Custom soundtrack and hand-drawn pixel art visuals.

  • Free to play on Windows, built for Undertale fans and meme culture lovers.

Controls

  • Move: Arrow keys

  • Confirm/Attack: Z

  • Other Actions: Context-based (depending on the encounter)

Easy to learn, but mastering dodges in bullet-hell waves is the real challenge.

FAQs

Is Bad Monday Simulator an official Undertale game?
No. It’s a fan-made parody that blends Undertale’s combat style with Garfield’s world.

Who is Garfield Sans (Sansfield)?
A bizarre fusion of Garfield the cat and Sans the skeleton, created as the main boss fight.

How many endings are there?
There are six possible endings, depending on your mode and choices.

Is Bad Monday Simulator free?
Yes. You can download and play it for free on PC.

Why is it called Bad Monday Simulator?
It plays on Garfield’s hatred of Mondays—except this time, Monday fights back.

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