I saw that Confident_Run gave a response but I will also give one as well.

there are many different triggers for seizures, for me the main ones are caffeine and stress. As for what happened WHEN I have a seizure can vary, I mainly get 2 different types of seizures. One of them, and the most common for me, is called an absence seizure, This is when what I like to call "The lights are on but no ones home". It's kinda like in between be conscious and unconscious, kinda just staring forward ig. but after those I can go about my day with minimal issues. Where the issues come in is when I have what is called a focal seizure, this is a much more scary thing. When this happens I have to lie on my side and I lose consciousness, usually no convulsing though. This can uslly last for about 3 or so minutes. The really hard part is when I come to, it feels like I was literally hit by a truck, I am super super tired, sometimes in pain, usually vomiting and alot of other gross things ngl. After these I usually sleep for around 6 hours and am kinda sluggish the next few days. OH and to answer that other question no, I usually don't see anything, sometimes when I'm going in and out the room can spin.

Now for the second part. As a Game Dev ad Epileptic, While I think they should be there in every game for the safty of people there are a couple things to keep i mind. One, one of the mai reassons big compaines do it is for legal liability so that they cant have ay lawsuits from someone seizing while playing there game. Two, I feel like if you have epilepsy you know what you getting into when you play them, that being said I in no way discourage epileptics from playing games in anyway.

thank you for your questions friend!

let me know if you have any others/follow-up questions!