[Free demo includes 2 cars & 2 tracks, single player only. Get the full version for all the cars, tracks, vehicle tuning editor, and online multiplayer]Amazing Curves Racing (ACR) is a single- and (full version) online multi-player racing simulator featuring advanced physics working directly on bicubic polynomial 3D curved surfaces. The physics engine was designed for network play from the start: lag is well hidden. The tire model provides realistic driving dynamics, including at high speed and on rapidly varying road surfaces, where driving aids can provide an easier or more challenging experience based on driver preferences. The racing line also shows curvature, drawn down INTO the road surface, helping to take curves well the first time and assisting with memorization. Computational Fluid Dynamics are used for realistic airflow modeling, providing for low to very high downforce driving experiences. 3D sound in addition to the HUD map provides helpful feedback for other car locations. The cubic 3D surfaces and "energy accurate" / symplectic physics systems were developed in the 2000's. While the graphics are simple for 2026, there's no long waits for levels to load or shaders to compile. The main focus for this Retro-RestoMod racing simulator is fun, engaging physics & gameplay with minimum complexity. ACR's developer created the very first consumer stereoscopic 3D and full VR games (1988: SpaceSpuds for Amiga, 1995: VR Slingshot for PC). ACR's simplified graphics work well on modern VR systems, with excellent stereoscopic 3D depth perception and smooth