Made by the right company, I would buy a Flash game in a heartbeat. The Flash totally rules and he has tons of powers beyond simply running quickly. Plus Barry Allen is an interesting character with a complex personal life.
I have Wombat to thank for my love of the Flash - he's the one that recommended Tom Vs. The Justice League on the Cagcast lo those many years ago. That became Tom Vs. The Flash and now Tom Vs. Aquaman, all of which are fantastic. So thanks, Wombat!