ActionTrip
[82/100] By Zvezdan Obradovic. "The basic idea of the original game has been expanded by introducing more new possibilities (coaster and scenario editors, new coasters, etc.), while still retaining all of the original's good .. and bad features."
Game Revolution
[B] By Ben Silverman. "If you've never played the original, then by all means pick up this sequel. It costs a mere 30 bucks and contains all the goodies plus some nice extras. But the true tycoons out there needn't waste their money. You've been on this ride before."
GameSpot
[7/10] By Brett Todd. "... successful in some aspects, but ultimately isn't a fulfilling sequel to one of the best computer games of the past decade."
GameSpot: Wacky Worlds
[4.7/10] By Brett Todd. "Some of the revamped rides and scenery items will no doubt be useful tools in the hands of serious fans who are interested in building their own scenarios, but if all you want to do is build new roller coasters and concession stands, you probably won't get your money's worth."
GameSpy: Wacky Worlds
[70/100] By Allen Rausch. "It's just more stuff for a game that's getting old."
GameZone
[7.6] By Justin Raymond. "... a great purchase for folks who haven't played any previous installments of the series, or fans who can't get enough."
GameZone: Wacky Worlds
[6.8] By Anise Hollingshead. "While this is a fun enough add-on, I just can't recommend it at the price."
Gaming Nexus
[7.5/10] By Ben Zackheim. "Rollercoaster Tycoon 2 is a brilliant, immersive, addictive romp of micromanagement fun! Wait, I mean Rollercoaster Tycoon 1 .. no .. Rollercoaster Tycoon 2 .. wait .. "
IGN.com
[8.4/10] By Dan Adams. "While it's more like a big expansion pack than a sequel, it's still RCT."
The Adrenaline Vault
[3.5/5] By Bob Mandel. "This is still one of the best roller coaster computer offerings out on the market today, but this sequel squanders the opportunity for stellar advances and now faces a steep uphill incline to be able to keep pace with the competition." Also has screenshots.
TotalVideoGames.com
[8/10] By Richard Amos. "There's nothing really here to really impress anyone that's played the original and so sadly this may go down badly with the already worn gamers."
UGO.com
[B+] By Jonah Falcon. "Rollercoaster Tycoon 2 is a nicely evolved version of Rollercoaster Tycoon. There is enough stuff to justify a sequel, and the game strikes a nice balance between remaining true to the original while giving enough tweaks and new stuff to feel different."