First off: this is not a game, if you're a fan of the Rollercoaster Tycoon games this might not be for you. It's a simulation and a tool made for people who may already have a wider knowlage of roller coasters. It has no park management features like Rollercoaster Tycoon. Nolimits often requires a quite in-depth understanding of rollercoaster engineering, physics and a passion for theme parks and roller coasters. If you're a Rollercoaster Tycoon player who wants to try something new, try the demo first.
Realistic-This is the most realistic design tool for roller coasters. It's not just stunning in terms of visuals, it's full of tiny details that enthusiasts can all recognise and appreciate.
Massive improvement from NL1-Everything in the editor has been vastly improved, you could spend hours just fixing g-force spikes and bumps that aren't apparent in the editor. The G-force comb is nothing short of glorious, it allows you to fully finetune rides to perfection without the need for other software like Newton.
Improved terrain editor-The simple addition of tunnels make this many times better than NL1.
Verity-NL2 has more coaster types than you're likely to master. Classic corkscrew coasters to B&M diving coasters, this simulation has everything. I would have liked to see more family style coasters though.
Scripting-This is probably the biggest advance for NL2, it makes coaster extremely flexible, though it has some problems I'll mention later.
Station improvements-The addition of dueling stations and tandem stations is very helpful for creating realistic rides.
Control panel-In NL1 controlling the ride was pretty much pressing the f9-11 keys, now it's fully functional and allows you to control individual block segments. It's surprisingly fun to operate rides in the simulation, some people have even made their own physical USB control panels. Unfortunately for the people building their own controls, there is a lack of hotkeys for operation, all block controls must be controlled with the mouse (but this isn't much of a loss).
Cons: It’s important to be honest, there are some serious problems which aren't fixable but could potentially ruin your experience of NL2.
No lessons learned from Newton-When people are forced to use other software for the actual design of a ride, there's a problem. The NL1 editor was very hard to use if you were building a coaster from scratch with no help from programs like Newton; NL2 has somewhat eliminated the need for Newton but a combination of Newton's perfectly smooth curve and the already amazing editor would have been beyond perfect.
Scripting-It's a gift wrapped with a lock and chains. If you have difficulty wrapping your head around scripting transfer tracks and switches, you're screwed. Like with Newton, the NL community has made some software to make scripting easier but it simply isn't enough. (What would have been perfect is a second scripting method based of placeable triggers, It would be less flexible but certainly easier to use).
And that's pretty much it.
Would I recommend NL2 to the average steam user? No.
Would I recommend NL2 to fan of Roller Coaster Tycoon fans? Maybe.
Would I recommend NL2 to roller coaster enthusiasts? Absolutely.