It's like... an extreme take on chess. So... you know how you have the pawns in the front row? You replace that with the entire back row so you have two sets of "specialty" pieces... but to win you have to capture both the opponents kings.

The front row setup can be players choice but the back row goes by the normal rules in setup.

sounds kinda like one of the things in regimental chess but that's got like 10000000 rules changes and multiple piece moving and shit so probs not what you'd what

"Really Bad Chess" for Android does something similar, but you don't get to choose starting pieces
https://play.google.com/store/apps/details?id=com.noodlecake.reallybadchess

Being able to chose the first line is what makes it so special though. SO many strategies...

and "Really Bad Chess" is hilariously awesome lo

I only changed the pieces and one rule... I'm knew it could easily become crazy... two simple tweaks that add much more than they take away.