Bad Monday Simulator

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Bad Monday Simulator: Sansfield's Lasagna-Fueled Grumpfest

Released:May 13, 2025

Creative Mode

Ever wondered what happens when Undertale's Sans morphs into a Monday-hating, lasagna-tossing cat? Meet Bad Monday Simulator, aka Undergarf, the fan-made gem that pits you against Sansfield in a bullet-hell brawl. Dodge bones, sip coffee, and brace for snarky rants about alarm clocks in this hilariously chaotic crossover for Undertale and Garfield fans.

Why Undergarf Is Your Next Obsession

Bad Monday Simulator delivers a wild ride that's equal parts challenging and absurd, perfect for fans of quirky crossovers:

Sans Meets Garfield's Monday Blues

Sansfield, a skeleton cat with Garfield's grumpy swagger, steals the show with his coffee-fueled tirades. The retro pixel art, awash in purple and teal, brings Undertale's vibe to life while sneaking in Garfield pals like Jon and Nermal for surprise cameos. It's a love letter to fans who get both Sans' spooky puns and Garfield's hatred for 9-to-5 drudgery.

Bad Monday Simulator gameplay showing Sansfield character

Bullet-Hell with a Side of Lasagna

This isn't just dodging bones—it's surviving Sansfield's Monday meltdown:

•Blue/Orange Switcheroo: Stand still for blue attacks, move for orange, or kiss your SOUL goodbye.
•Lasagna Pickups: Grab these to heal, but save them for the brutal '5 PM' phase.
•Coffee Jolts: Boost your speed to weave through Sansfield's trickiest patterns.
•Monday Phases: Attacks ramp up through 'morning' to 'evening,' each with new chaos.

Think Undertale's heart-pounding battles, but with lasagna-shaped bones and Sansfield griping about traffic jams.