Spoil the ending... badly.

[Zanreo]

The bad guy talks nonsense for a ridiculous amount of time before giving you the secret code

V nope

[Florien]

This is a wild guess, but Bad Milk?

Everyone becomes obsessed with a weird death cult and the guy who tried to save them from it is repudiated, but in exchange, one of the cult's holy figures pays a terrible price. He must wear garish footwear forever.

[Cassie]

Giant dies, turns tiny, and kills a normal-sized dude.

[SmilyCube112]

Random teenager who only had their guardian spirit for a short while and had no time to practise using it uses it anyways to beat the living hyperquacks out of a supernatural being who also has a guardian spirit, having had it for longer than the teenager.

[Florien]

The hero gets shot, and then suddenly a bunch of random characters are introduced and immediately killed. The end.

[Dookie]

Everything goes back to normal from before the conflict started. Everything.

Also piece of bread gets a tuxedo

[Cassie]

the REAL protagonist finally accepts shit and makes his suicidal split personality go away for real.

[Whistle]

The girl has a heart attack doing ballet and everybody celebrates.

[awe921]

local empathetic kid steps out of their house into a scribbly world, walks past a tumor and turns into a flatline after apologizing.

[Florien]

And it was his abusive dad all along! Wait, no, it was his family's business rival's mercenary all along! Wait, no, it was a land-grab turned violent by an oil prospector! Wait, no, it was retaliation for driving previous inhabitants out and stealing their livestock! Wait, no, it was a government plot! Wait, no, it was his wife's ex-boyfriend! Wait, no, it was himself all along and he just didn't want to admit it to himself! Wait, no, it was EVERYONE, EVERYONE DID IT!

[Cassie]

In the end, the three races reunite once again; BANDICOOTS, MASKS, AND HUMANS.

[Huney]

I honestly can't think of what that would be other than Crash, so I'm gonna guess Crash 4, as I don't recognize this and that's the only Crash game I haven't played to some capacity.

It turns out the easiest way to solve ghost problems is to just brain your teacher with a baseball bat.

[Florien]

Whereupon a guy kills a mother and her baby, but dies because the mother killed him back. And the guy's friends are kind of sad about that.

[Pffffft shsbsbshwhwi]

Oh boy, here we go chasing men in black again...

[awe921]

You had a BOMB! And it blew up after your supposed best friend started shooting at you!
And then you travel back in time to do things better next time.

[josh6243]

A knight rescues a princess from an evil wizard, only for her to simp for her kidnapper and kill herself. Poor guy.

[awe921]

honestly an epic Oersted moment from Live A Live.

you saved the day! but your tsundere friend dies of cancer.

[Cutegirl920fire]

So the Superman-expy MC hooks up with his childhood best friend, a heroic Poison Ivy-expy, his pyrokinetic bully becomes his best friend, and his ex-girlfriend turns out to be the villain eariler and thus in Super-Detention now.

[josh6243]

A brain and statue fight to the death, causing the Earth to blow up.

[noodlesnook]

ancient iraq's favorite ( or least favorite ) gay becomes depressed

[Whistle]

The bad guys fuse together and the good guys get sent to a halo planet.