RollerCoaster Tycoon

This set includes floors, wooden path and pool covers, planter covers, stair covers, wood railings, tropical metal roofs, shutters, slide supports, clapboard walls, windows, and more.

To take the description from another source:
Edit your RCT1 saved games in a new way! You can design new scenarios, generate random terrain maps, modify the research items, change vehicles, etc, etc, etc! This is not a "trainer" - it works only on saved SV4 and SC4 files. You should keep a copy of your original files in case the edits result in RCT not working properly. It is intended primarily for Loopy Landscapes. You will need the Drexler patch for many of the edits to be usable in RCT.

An effect pack containing some effects with colored smoke aimed to use in the daytime. Created by wolfpaw.

An effect pack created for a Rio show that someone had requested. Created by wolfpaw.

The effect pack used to create the show 'Speakeasy'. Created by wolfpaw.

The first (and only) volume of a realistic pyro crafting competition that was held on vPyro. This pack contains all the submitted and winning effects. Effects created by shadowdragons, wolfpaw, Kris, and JBpyrofan.

All effects from the first phase of Ilyxr Dynamics. Effects originally created by AT_Mad.

All effects from the second phase of Ilyxr Dynamics. Effects originally created by AT_Mad.

All effects from the third phase of Ilyxr Dynamics. Effects originally created by AT_Mad and n7.

All effects from the fourth phase of Ilyxr Dynamics. Effects originally created by n7.

All effects from the fifth phase of Ilyxr Dynamics. Effects originally created by n7.

All effects from the sixth and final phase of Ilyxr Dynamics. Effects originally created by n7.

New set of planters features stone path curbs and walls, fancy metal railings, modern and wooden planters, and more.
 

Create diagonal and curved pathways with this set. Contains path edges, railings, terrain covers, and flowers.

This pack contains a variety of effects to use in your RollerCoaster Tycoon 3 shows. Install the firework effects in your fireworks folder and the laser effects in your lasers folder.

A variety of effects used in shows from Pyrotechnic Innovations. Created by Melawse.

The complete pack of all effects used by Illuminated Alliance (IA) to create their shows. Various effects created by Sino, Jaron, and wolfpaw.

An LED pack created by Caebecca that was used in various Fyre Teknix shows. Install like how you would install any other firework effects in RollerCoaster Tycoon 3.

This pack contains all the effects that the former company, Eclipse Pyro Productions (EPP), used in their shows.

AD pyro pack number 1 for RollerCoaster Tycoon 3. Install like how you would install all other firework effects!

AD pyro pack number 2 for RollerCoaster Tycoon 3. Install like how you would install all other firework effects!

AD pyro pack number 3 for RollerCoaster Tycoon 3. Install like how you would install all other firework effects!

AD pyro pack number 4 for RollerCoaster Tycoon 3. Install like how you would install all other firework effects!

This set contains rocks, rocks, and more rocks! Also rock floors, stalactites, and stalagmites. More than half a dozen textures, including colorable.

This set contains new awnings, windows, benches, billboards, columns, flags, diagonal roofs, fancy wainscoting and trim, diagonal brick walls, character flats, signs, and many more odds and ends.