One of my favorite PC games of all time. There's an enduring player base and online community for it, as well as a really solid open source reimplementation: https://openrct2.org/. - Source: Hacker News / 3 months ago

RCT2 is the reason I made a Steam account haha, def check out https://openrct2.org/. Source: 6 months ago

Hey, you might want to take a look at this: https://openrct2.org/. Source: 6 months ago

If you buy the RCT2 pack (https://store.steampowered.com/app/285330/RollerCoaster_Tycoon_2_Triple_Thrill_Pack/) then you can run OpenRCT Project (https://openrct2.org/) on top of it Highly recommend. Source: 11 months ago

Nowadays just buy both on Steam or GOG and use OpenRCT2 to combine both with modern features. Source: about 1 year ago

I guess you already know about https://wesnoth.org/ It is probably the most well-known free and open source turn-based game. - Source: Hacker News / over 1 year ago

The Battle for Wesnoth is an underrated tactical game… and it’s free! There are some amazing people that have been working on content for this game for over 15 years. Source: about 2 years ago

The Battle for Wesnoth is completely free and one of the best turn-based tactical games I’ve played. Source: about 2 years ago

Battle for Wesnoth is talked about a lot among open-source gaming fans, but not enough in the community at large. It's a turn based tactical RPG that comes with many scenarios that are full games in themselves. Cross platform, moddable, over 200 different unit types… just an amazing game, all completely free. You can get it on Steam, itch.io, or at https://wesnoth.org and you really, really should. Source: over 2 years ago

Battle for Wesnoth (free at wesnoth.org) Langrisser/Warsong clone game. Source: over 2 years ago