This is decent fun, but a poor camera and a surprisingly short campaign stop it being anything too write home about.
Micro Machines V4's biggest undoing is its camera, which frequently makes it near impossible to see where you're going. This isn't so bad on racing or time trial, but in battles, it's really noticeable, and the perilous circuits get harder. The circuits themselves all follow the same plan to beat. Racing through them is really just a matter of knowing where the obstacles are to avoid them, and except for a few shortcuts on some circuits, each circuit is fairly similar, except for its setting, ranging from ships to kitchens, and everywhere in between. The circuits are nice to look at, but all present similar obstacles for you.
One of MMV4's better aspects is its multiplayer, which is frequently entertaining. It is really in this that the game's weaponry is most fun, and hitting friends and relatives with flamethrowers and hammers is a welcome relief from single player.
Overall, Micro Machines is a pleasant enough game. The cars and setting are charming, but beneath it is a usually simple (with the odd devastatingly hard mission thrown in, but thew difficulty rarely feels just right) game with a hard camera. Multiplayer is a relief from this, and one of the game's saving graces. If you're a fan of Micro Machines, or if you're bored and looking for a cheap racing game, this is a decent enough game. You may want to pick this up for a few hours of entertainment, but it really isn't worth paying too much for.