What's a simple, pointless thing you loved to do in a video game as a kid that had literally nothing to do with the main story?

I remember I used to play GTA Vice City and San Andreas. Every time, I'd put in the cheat codes for weapons and infinite ammo, then start increasing my wanted level all the way to five stars. I'd grab a tank and just start wrecking every car in my way, lol. It was pretty much an everyday thing for me.