Wow, Roblox looks pretty cool nowadays.
Yeah, Only the Lobby does, the rest of the winter games places look bad.
In terms of gameplay though most of the games are either broken or crappy for the winter games.
Snowblox is just ski down a hill, if you hit all the speed boosts congrats you win.
Snowboard racing is pretty much Snowblox but with powerups that do nothing and you can climb up walls for whatever reason.
Winter karts is a poorly made version of Mario kart.
Snowball fight is a TDM with screen covering effects that are even more screen blocking than CoD's Bloody screen. (also you can Teamkill and you still get points for that.)
Breezekrieg is okay, but it breaks every other server and tanks can't shoot at all.
all in all, most of the games are pretty bad and seem very untested.