Thanks! I've never played that Flash game but I'll take your word for it :)
There is a way to restart the level by pressing space and then R, but the text is easy to miss.
Viewing post in The Circle of Life jam comments
Ah ok, my bad, I must have missed that. Either way, twas a fun game!
FYI I recalled the name of that Flash Game: it's called Karoshi: Suicide Salary Man. The idea behind that is that you're a Japanese worker who has been overworked and you want to kill yourself, so the game is basically these whacky puzzles where you have your character kill himself in the most absurd ways. Here is the link: https://armorgames.com/play/2407/karoshi-suicide-salaryman
I'm not sure if it's in the link I pasted, or if it was another version: there are some levels where you have multiple clones of your character and you have to ensure they all die. That's what your game reminded me of specifically.
For the record: I don't condone suicide or any kind of self-harm.