Drop Chess
Your pieces may move only after your king is on the board. Consider carefully where and when to drop him.
Notes: I've tested the mechanics of the game over the course of a decade as I used it with my students to practice adding attackers/defenders, coordinating pieces, and improving calculation in general. It leaves plenty of room for creativity and for the better chess player to come out on top. I'm happy with the final version apart from the name. Over the years we've called it Open Chess, Geronimo, and Drop Chess. I like Drop Chess best if it wasn't already a casual name for Crazyhouse. But I figure let Crazyhouse be called Crazyhouse, let Drop Chess be it's own thing. Still, I'm open to suggestions.
One bug that needs to be worked out is the game will end in a draw if both players drop a bishop first. So in testing, I started with a rook.
Comments
6
I played this a bit OTB, and it's very fun and complex.
It's definitely not for everyone. There is a ton of calculation needed in the opening, and the possible moves can be overwhelming. But I thought this was a place to workshop the ideas and come away with the best version of this thing. What do you hate about it? maybe we can figure out an improvement.

Well don't say it out loud. Criticism is okay, but just "I hate this" is a little too broad.