What game can you never get bored of no matter how old or how much youve played it?

Garry's Mod for sure. Even with over 3000 hours, I still find cooler and better game modes to play on. It's basically a playground for people to do whatever their imagination desires and you can just never get bored because of the different game modes you could end up playing.

If you add a friend or two, then the experience is even better.