Darkwind: War on Wheels is an online post-apocalyptic car-combat game by Irish developer Sam Redfern. It opened in 2007, reached Steam as a free game in 2014, and draws on the Car Wars board game and Mad Max.

Its hook is simultaneous turn-based combat with real physics: you set speed, steering and gunfire for each vehicle every turn. Fights can involve up to twenty cars. You manage a gang, train characters, build cars from parts and trade. There are racing, deathracing and arena leagues, plus scouting trips into the wastes, and characters age, get injured and can die for good.

It suits tactics and wargame fans rather than racing fans. The interface and graphics are old and the learning curve is steep. Its announced follow-up, War on Wheels, focuses on single-player.