An analogue of my old modification "Int open mod", now the project has received a new name and has been completely transferred to Lua. Being on CLEO, the mod often caused crashes for some users, this will not happen on the new platform.
Now about half of all interiors, garages and ordinary houses hidden in the game are open (of course, not everything is shown on the screenshots). New interiors will be slowly added to the project. We will move towards making the name match the modification
All collision of intangible interiors has been fixed (by Victorch4) so you won't fall through anywhere.
Detailed installation in the archive. Moonloader is required to work.