AITA for forcing my best friend to inject himself and another man with poison in a convoluted prison escape game and making my coworker watch?

I (M26) have been friends with my best friend (M, age unknown but someone on Twitter said he's 39. He doesn't look 39 though) for several years, ever since he sat at a table in a dark room with me and said something really deep. We also work together for a terrorist organization, but he got arrested and sent to a high security prison. While our organization continued its quest to find a magical book and change reality. I realized that I was just a bird trapped in a cage, and set out to prove the free will of man by killing my best friend, setting myself free from my own heart. Unfortunately, my best friend is a mega genius who can see through my plots. So, I waited for my coworker (M3) to fall out of the sky and seeked out his help in finding my best friend's superpower in order to kill him. We broke into the prison using my overcoat (which is actually just a cape) and found him and his homosexual nemesis (M22). Because my best friend is super competitive and has to win and be the smartest at everything, I knew that the only way he'd take the poison is by offering his rival a lethal injection too. I told them I only had one antidote, and whoever escapes first gets it. I even let them both pick a tool, but my friend's rival picked my coworker who's been standing here like a big ol idiot this whole time because he's only three years old and doesn't understand fun. I left to let them complete the game, but I kind of feel bad now. Is this just my restrictive conscience that is tormenting me or am I really doing something wrong?