[anthonyb]

I can remember having trouble with Silo, that bloody 7:00 minute time limit. After a while I realised that I was having trouble aiming and had a big blind spot in one eye where the crosshair would normally be.

I went to bed pretty quickly after that - my vision came back, thankfully :)

Edit: This was about 3am, for the record, after I'd been playing for about 12 hours or so.