Time Ace review at Gamespot.

"If you were an expert pilot who could travel through time, would you A) take over the world B) defend it from the kinds of people who would take over the world or C) fly back to the 80's and get rich betting on sports? In Time Ace, a new Konami rail shooter for the Nintendo DS, the decision is made for you. Instead of seizing a millennium's worth of royal rights or following in the fat footsteps of Biff Tannen, you thwart the anachronistic schemes of the evil Dr. Scythe as the scruffy Dr. Clock and, ultimately, save time as you know it. It's kind of ironic. After all, as you're saving time in the game, you're killing it at a bus stop or in a line and probably having a decent bit of fun. Unfortunately, your intrepid hero is so capable, he defeats Scythe in a measly few hours. Talk about a brief history of time. By the same token, this isn't an amazing journey back to the future. Time Ace has its share of bogies, such as rather poor graphics, funky mechanics, and a dumb plot to name a few, but at least it comes with a budget price tag."

Full Source: Gamespot