LambdaTale

LambdaTale is a Undertale AU that takes place in the Black Mesa Research Facility during the events of Half-Life. Some features of Undertale have been removed, such as the ability to spare. Frisk has been replaced by Gordon Freeman, The Monsters are replaced by characters from other games and the game starts when he wakes up after the Resonance Cascade.
== Characters and Places ==
=== Anti-Mass Spectrometer 
The Anti-Mass Spectrometer room replaces the first room you wake up in Undertale. In LambdaTale, Freeman wakes up to blaring sirens and must escape the room to progress. Along the way, he meets another entity.
Heady the Headcrab 
Heady the Headcrab replaces Flowey in LambdaTale. As soon as Freeman meets him, he tries to trick him into coming closer to him. He jumps on Freeman, and he strikes him with his crowbar and runs out. Heady reappears later though.
Office Complex 
The office complex replaces the Ruins in LambdaTale. This is where the Black Mesa offices are located, and that is where the headcrabs and the headcrab zombies mostly reside. There are fewer puzzles like in Undertale, however.
Blast Pit 
The Blast Pit replaces Toriel's house in LambdaTale. This is where the first boss of the game, the Tentacles, reside. On the sides of the blast pit are two rooms, one for the power, and one for the water. Freeman has to activate the switches in two rooms to be able to turn on the rocket engine and kill the Tentacles.
Pinata Jungle
The Pinata Jungle replaces Snowdin in LambdaTale.
Paulie Pretztail
Paulie Pretztail replaces Sans in LambdaTale.
Fergy Fudgehog
Fergy Fudgehog replaces Papyrus in LambdaTale. 
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Category:Crossovers
Category:Serious
Category:AUs
Category:Written story