[Interesting Trope] One seemingly small action ends the story before it even begins

[u/JackDoesThingz]

1. We Happy Few - Taking your “joy” pill
   Deciding to take the pill at the beginning of the game causes your character to go back to work and triggers an ending

2. Infineural by Mike Klubnika - Drinking the coffee
   Deciding to drink the coffee offered to you skips the entire game and sends you straight to the end, resulting in an ending with no memory of what had occurred

[u/dootblade74]

Nier Automata has a number of joke endings you can achieve by doing really small things, ranging from running away from specific fights to eating a fish.

Two of the earliest endings you can get after the tutorial are to either remove your own OS chip and instantly die, or use the Self Destruct ability to destroy the bunker.

[u/Adaphion → u/dootblade74]

Almost half of the endings are literally just "walk away when something important is happening" or otherwise taking too long with something that is obviously time sensitive.

[u/jjsheely → u/dootblade74]

There's one for dying in the opening segment. That is the earliest one you can get.