Exploited Variants

I'm gonna put exploited variants there, comment if you know more:

Dead Grasshopper Bug:

Used in:

Herd in Swarm

Cursed Sculptures

Xiangqi Horse Crazy Check Bug:

Currently not used on purpose.

Crazyhouse Bank Lock Bug:

Switching Armies

Full Control

what about the promotedFrom pawn bug

No submissions yet

Isn't Tinyhouse a modern WoF?

it only counts via if it was intended, if not it isnt listed here

fatty queens

I know about it, I co-created the variant duh

Some other glitches/surprising features:

1. en croissant bug
2. the check counter glitch in selfcheck
3. the piece count in the bank in setup+crazyhouse is not showed
4. selfexplosion of promoted pawn to a brick/transparent brick/duck in atomic
5. promotion to a transparent brick in fatal
6. the dead king in giveaway/fatal/petrified claims the hill after capturing
7. capturing next to own royal pawn in atomic is not allowed 
8. capturing by the royal pawn in fatal is not allowed, however moving the royal pawn to the en passant square removes that pawn (only pawns with the same move/capture movement can do that - sergeant, soldier, stone general)

In my variant submission "Fun Halls" I use a glitch where Immune zombies explode in Atomic

That's not a glitch but a pawn/brick logic

It's an age old feature with bots, and works with fatal/petrified too

Pawns and bricks are immune to explosions, but they are also destroyed at the epicenter. Immune zombies act like movable bricks.