Super Mario Bad Time Duo

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Super Mario Bad Time Duo | Mario Bros Sans Fight Simulator Challenge

Released:June 11, 2025

Duo battles Creative mode

Super Mario Bad Time Duo Game Screenshot

When Mario and Luigi accidentally stumble into the Judgement Hall, they face off against you in this unexpected crossover! This unique Sans fight simulator replaces the skeleton brothers with Nintendo's famous plumbers, creating a fresh twist on the classic bad time formula with familiar controls and surprising new mechanics.

Nintendo Meets Undertale's Toughest Challenge

Super Mario Bad Time Duo transforms the traditional Sans battle into a Mario Bros showdown while keeping the core mechanics that make these fights legendary:

Plumber Power-Ups Meet SOUL Dodging

•Mario's Fire Flowers - Dodge flaming projectiles that replace traditional bone attacks
•Luigi's Green Thunder - Navigate electrical patterns with precise timing
•Power-Up Chaos - Face familiar Mario abilities reimagined as bullet-hell challenges
•Critical Health Warning - Luigi's attacks become instantly lethal at 1 HP
•Mushroom Kingdom Aesthetics - Classic Nintendo visuals in Undertale's framework

A Crossover That Actually Works

This isn't just a skin swap - it's a thoughtful reimagining that respects both franchises while creating something entirely new:

•Toad's Backstory: The accidental encounter that started this whole mess
•Dual Personality Combat: Mario's aggressive rushes vs Luigi's cautious but deadly precision
•Health Management Stakes: Strategic gameplay where every hit matters more near death
•Familiar Yet Fresh: Arrow key movement feels natural while attacks surprise veterans
•Crossover Dialogue: Nintendo characters speaking in Undertale's distinctive style

How to Survive the Plumber Brothers

Master this Nintendo-Undertale fusion with these essential strategies:

Movement and Timing

Arrow keys control your SOUL through Mario's fire patterns and Luigi's electrical attacks. Unlike traditional Sans fights, these plumbers move around the battlefield, requiring you to track multiple threats simultaneously.

The Luigi Danger Zone

When your HP drops to 1, Luigi switches to instant-kill mode. This creates intense risk-reward gameplay where aggressive dodging early on determines your survival chances later. Watch for his tell-tale green flash before fatal attacks.

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