SRB2 VS OpenTTD

if you're a Sonic fan, you could play free games like Sonic Robo Blast 2 or Sonic and the Fallen Star which are great imo.

Sonic Robo Blast 2: https://www.srb2.org/

Godot does offer Constructive Solid Geometries that can be used for basic prototyping, and can be exported to Blender for additional work. https://docs.godotengine.org/en/stable/tutorials/3d/csg\_tools.html As an alternate engine, you could also consider Sonic Robo Blast 2 https://www.srb2.org/ as a possible engine to work in. Which has been stretched all the way into making a Kart Racer.

Here are a few free games I've played on my tv: C-Dogs SDL, Sonic Robo Blast 2

I would recommend Delta Touch (Doom engine ports), knights of the old republic 1 and 2 (both support mods on android), Sonic Robo Blast 2 (not on play store but at www.srb2.org ), Source Engine android port (portal, half-life 2, also not on play store but can easily be found by googling it)

OpenTTD - Open source simulation game based upon Transport Tycoon Deluxe. C++, SDL2

https://github.com/OpenTTD/OpenTTD/pull/11565 for reference.

#6 - OpenTTD - Transport Tycoon Deluxe... with multiplayer.... it has the most Win98 Interface, but once you get past that... this is the best and most amazing free sim tycoon game you will ever find.

OpenTTD is awesome and comes up quite often if you search for "free alternative" in this sub.

OpenTTD is quite similar and free. (Free as in freedom and free as in beer.)

Probably not nearly as complex and a bit different, but: OpenTTD

Not for long: https://github.com/OpenTTD/OpenTTD/pull/10709

Open Transport Tycoon Deluxe https://www.openttd.org/