v0.3.3 of the RollerCoaster Tycoon 2 reimplementation OpenRCT2 is out now and it includes quite a lot of enhancements as the community works towards giving the ultimate cross-platform experience.
It's already ridiculously good, with tons of improvements compared to the original game like OpenGL hardware rendering and multiplayer but they keep on adding to it. With version 0.3.3 out now they've made it even easier to get running on Linux with direct support for the GOG installer of the original using innoextract.
Various gameplay changes made it in too like an enhanced Track Designer with ability to add/remove scenery and footpaths, the Track Designer has a pause button now, there's a new single-rail roller coaster, terrain surfaces from RollerCoaster Tycoon 1 are now supported, lots of plugin improvements and new API additions, and lots more including plenty of bug fixes to improve the experience further.
You can find OpenRCT2 here and to make it easy they have pre-built versions for Linux like an AppImage to run cross-distro. You also need to grab the required data files from RollerCoaster Tycoon 2 by buying a copy of the original on GOG or Steam.