Slightly Mad Studios' Project Cars has been delayed again.

It's due out for PC, PlayStation 4 and Xbox One mid-May 2015, publisher Bandai Namco said. There was no mention of the planned Wii U version in today's announcement.

"The shift of the release date is due to the team's continued dedication to polishing the game," reads a statement.

Project Cars was delayed back in February to 2nd April. It was originally due out last November, but was delayed to 20th March.

Slightly Mad Studios promised free content by way of compensation that will be available the day the game comes out.

Here's Slightly Mad Studio's Ian Bell on the latest delay:

Despite our long heritage and pedigree in making critically-acclaimed racing games, Project Cars is by far the grandest and most intricately detailed of them all. Despite therefore the game being 99.9 per cent complete, the remaining 0.1 per cent attending to small issues and bugs has been tricky to anticipate. We're absolutely dedicated to delivering a ground-breaking experience and by targeting mid-May fans can be assured that's what they'll receive. Again, we want to thank our fans for their support and patience on this matter. There's a high expectancy from racing fans around the world that Project Cars is going to be an exciting new contender in the simulation racing space and we firmly believe gamers deserve it to be in its most complete and polished state when they come to play it on day one. Popular now Sony reveals the install size of some of its PS5 games Drive a hard bargain. So long, "gay Bowser" - fans lament the loss of Mario 64's most famous line in Super Mario 3D All-Stars Bye! Sony apologises for PS5 pre-order chaos Promises more will be made available soon. And since the gaming community is our primary focus and has always been at the heart of the project during development, we would like to offer some free content to all players as compensation for this short delay and as acknowledgement of how grateful we are. This gift, that we're sure is going to excite fans, will be available from day one and revealed shortly. Keep an eye on our website for more info.