Controls are standard for this type of games. Arrow keys are used for everything, to accelerate, brake and tilt back and forth. It is usually recommended to make a tilt forward when you ride uphill and thus keep balance. Similarly, to keep balance when going downhill you should tilt back a bit, which is a left arrow key. Otimus will tilt back and avoid falling off the bike. Since levels have no time limit, if you decide to ride slowly, there is no way you won't be reaching the finish line in one piece.
Problems on track start only after level 3. There are no dangerous obstacles or anything, but uphills become extremely steep. Tipping is almost inevitable.
Graphics is rather descent, but is seems like there is much wrong with this game. There are no upgrades, no obstacles, nor any possibility to perform stunts, which then could be rewarded with points or something. The game thus feels a bit empty and boring. Even the bike Optimus is riding resembles more some kind of Harley rather then real dirt bike.
Still, with some imagination, it will most certainly satisfy the appetites of younger and less demanding players, and specially of those who like racing and bike riding.