Midway through the game, you might get access to a swank, top-floor loft safehouse owned by your pal Playboy X. If that happens, try changing clothes while you're there; as you cycle through your outfits, you'll find a new one that's a dead ringer for the clothes worn by GTA III's hero, Claude. Yeah, we always thought the black jacket was more of a leather biker number, too, but there's no mistaking those olive-green cargo pants. It's not the slickest outfit in the game, but if you're feeling nostalgic, slipping on Claude's ensemble can add to the fun of mass destruction.
Above: GTA IV's Niko Bellic on the left, GTA III's Claude on the right. Hooray for historical re-enactment!
The amusement park at Firefly Island is completely shut down and therefore not really worth exploring - unless you want to see some really cool references to earlier GTAs, that is. Visit the mini-golf course sometime, and you'll be able to see miniature versions of landmarks from other games scattered around. These include:
The Ocean View Hotel from GTA: Vice City
The giant chicken from GTA: San Andreas, which doesn't move...
... but which does have a comb that disappears depending on the angle from which you look at it.
There's also the farm windmill from San Andreas' countryside...
... the Watts Towers re-creations from Los Santos...
... and the lighthouse from the old Liberty City, as seen in GTA III and GTA: Liberty City Stories.
Here's where to find it all:
Former Xbox boss says GTA: San Andreas and its infamously NSFW Hot Coffee minigame "signified a maturing of the industry" and put games "on par with movies and music"
A GTA streamer is trying to beat every single 3D entry without dying, and in 33 hours he's made it as far as San Andreas but keeps getting caught in Vice City purgatory
