Cheapest yet, I believe.

They're Micro. They're Machines. And they're BACK!
Micro Machines World Series will retain the manic social game play of the classic series, but will bring a new dimension to the experience with stunning HD visuals - taking you to the much-loved household environments as they've never been seen before.
As well as bringing to you the classic game modes like Race and Elimination, Micro Machines World Series will introduce a new style of game play to the series: Battle Mode. The all-new Battle Arenas will allow you to wreak mass destruction on a miniature scale against your friends or the AI. Meanwhile, Team Play lets you work together using your vehicles' unique skills with modes such as 'King of the Hill' or 'Capture the Flag'!
The game's been designed around fun and frantic play at every turn, meaning there will never be a dull moment on the racetrack or in the arena. Micro Machines World Series is the ultimate pick-up-and-play experience for players of all ages and abilities, offering intuitive, easy-to-learn controls that make the controller impossible to put down.

They're Micro. They're Machines. And they're BACK!
Micro Machines World Series will retain the manic social game play of the classic series, but will bring a new dimension to the experience with stunning HD visuals - taking you to the much-loved household environments as they've never been seen before.
As well as bringing to you the classic game modes like Race and Elimination, Micro Machines World Series will introduce a new style of game play to the series: Battle Mode. The all-new Battle Arenas will allow you to wreak mass destruction on a miniature scale against your friends or the AI. Meanwhile, Team Play lets you work together using your vehicles' unique skills with modes such as 'King of the Hill' or 'Capture the Flag'!
The game's been designed around fun and frantic play at every turn, meaning there will never be a dull moment on the racetrack or in the arena. Micro Machines World Series is the ultimate pick-up-and-play experience for players of all ages and abilities, offering intuitive, easy-to-learn controls that make the controller impossible to put down.
Bit of a wasted opportunity
Defiitely half-baked, lack of tracks, a single-player Champ, boats.
Shame that V3 (on PS1) had more to do!
Gameplay and looks are spot on though!
DO NOT buy this POS game, it was absolutely terrible... certainly sont get it for anything over a fiver!
as i've mentioend before i NEVER trade my games in.. this was traded in within a week, luckily i made a 21p profit as game were giving 30% extra on trade ins!
and i still jhave the PS1 version which is far superior.
Well actually, you have local multiplayer, so as such, it's ok for my 5 year old. If you are just buying this for you, then probably don't.
Also have a 5 year old, but she would far rather play Minecraft or Super Toy Cars than this.
What does this mean?
I've played it and it does have multiplayer.
The game does have multiplayer modes, both online and local.