just pushed a patch that has a toggle for the strobe effect under the gameplay tab in the options. it turns off the instances of a strobe effect *that i could find* - so PLEASE have him play at his own discretion. I can't promise that I didnt inadvertently miss one and it'd kill me if your friend ended up having a seizure. so if you play it again and find one that i missed, let me know and Ill remove it!