Freakin' Awesome.

There are only four good rollercoaster games on yoyo, and this is one of them.
Every wanted to make a rollercoaster? You'd probably head for achtabarn, but this is just as good as any.
The construction tools are easy to understand and easy to use, and you needn't bother with making sure the coaster has a "soft" path, which means you can go pretty wild with your coasters.
The graphics might be a little jumpy, but this is not without its upside: The game can be run perfectly even on low-end systems and laptops.
The music is a little repetetive but it sets the mood of the game, and thats a good thing.
Genius game. ;)