You certainly can say it, but I’m going to have to mostly disagree it’s a good example though because I felt Half-Life was very linear. What it did do a good job at was creating a convincing illusion of non-linearity, which I can certainly see some people getting lost in occasionally, but probably briefly (unless you have particularly poor navigation abilities which some people definitely do). It can be especially bad once you get to Xen, which felt deliberately confusing and not really the greatest section of the game for a lot of reasons.