Marble Blast Ultra was basically a launch title XBLA game, that was also one of the most popular games during the first year of the console's release. It's been taken off the marketplace, and some haven't been able to try it... until now.
KILAR 835 has made a bunch of Marble Blast Ultra maps, some being remakes, in Trials Evolution matching the physics almost perfectly.
The maps contain power-ups similar to the arcade release, as well as Ultra Blast power, and similar music.
Here is some gameplay showing 2 of the maps:
I just wanted to share this with everyone, as the maps are great fun, and I though the creator should get as much credit and exposure as possible. A lot of effort was put into this, and the content is truly amazing. If you are a MBU player, you will be amazed. When you stop to remember that you are actually playing a 2D motorcycle game, you will be even more amazed. Give it a try yourself.