Hello!
We have an exciting update for players who own both Transport Tycoon Deluxe and OpenTTD. If you have both games installed on your system, you'll now be able to import Transport Tycoon Deluxe graphics, sfx and music directly into OpenTTD!
The process is simple: update Transport Tycoon Deluxe and make sure to launch the game at least once. From there, any time you open OpenTTD you'll see an option to change the Base Graphics Set and Base Music Set to “original_dos”.
Now you can enjoy the classic look of Transport Tycoon Deluxe while playing OpenTTD (and of course, keep on playing Transport Tycoon Deluxe for that dose of classic Transport nostalgia).
The OpenTTD update is currently live only in a Beta branch via openttd.org, but will be coming to Steam in the coming weeks.
This update is a product of the ongoing collaboration with Atari and the OpenTTD team, and we hope you enjoy it!