I'm always willing to help. However, I can't help you much.
Turtle Chess

no that was frog chess
so what exactly is turtle chess? not everybody coming here will automatically know

i wanted help from a few people to think up turtle chess
so basically you're giving a prompt and telling other people to give you an idea?
you could have just clarified that at the start...
Turtle chess: (idea)
A very slow playing variant, in which all the players involved are extremely solid and it usually takes >100 moves for any decisive action to take place.
Most of the pieces involved will be weak pieces, and their target (king) should be hard to attain.
Special rules should all be disables, except ones which make the game last longer.
The game should boil down to 4 players sitting in front of their computer screen, contesting who has the most time to waste playing 4pc.
It's just an idea though:
I must warn that everyone implementing my idea will have it immediately rejected by every cga there is around here.

solid players that hate letting their opponent have any fun or gambits play mirror londons against eachother lol

Turtle Chess(idea):
A variant played on an 8X8 Chessboard, the same placements. But the 4 and 5 lines are the "river".Pieces can pass the river or land on the river just like a normal empty square.
In the river, there is a turtle, "scanning" the river from left to right. The turtle can block pieces on the board, or if the turtle lands on a piece, the turtle captures it. The turtle can be captured. If that happens, a new turtle will be spawned random squares chosen from: a4,a5
In 4pc turtle chess, The river is a 4x4 square in the middle of the board. There will be 4 turtles on each corner. If a piece is captured by the turtle, no points will be added to any player or team.
Well, this variant probably won't be accepted, while the turtle piece and the river might not be invented or programmed.
anyone wanna help me think up the variant turtle chess? if so then lemme know in the forum and ill DM you a link to the turtle chess dev club