OpenRCT2 needs the original RollerCoaster Tycoon 2 data files."

You need the folders 'Data', 'ObjData', 'Scenarios' and 'Tracks'"
from the original release and copy them into '/usr/share/openrct2/rct2_data'."

For additional content, you can install the RollerCoaster Tycoon 1 data files."

You need the folders 'Data', 'Scenarios' and 'Tracks'"
from the original release and copy them into '/usr/share/openrct2/rct1_data'."

Optionally, the paths can be overwritten by the parameters"
'game_path' and 'rct1_path' in your local ~/.config/OpenRCT2/config.ini file."

See: https://github.com/OpenRCT2/OpenRCT2/wiki/Required-RCT2-files"
See: https://github.com/OpenRCT2/OpenRCT2/wiki/Loading-RCT1-scenarios-and-data"