LUFTRAUSERS 1.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this Mac application is Vlambeer. LUFTRAUSERS for Mac lies within Games, more precisely Action.
From the developer:
Luftrausers is an arcade aerial combat game for Mac. You can select from over 125 combinations of weapons, bodies, and propulsion systems and take to the skies to battle enemy fighter planes, battleships, submarines, and rival aces for glory, honor, and high scores.
You may want to check out more software for Mac, such as Dodge That Anvil!, AirAssault2Demo or Foreign Legion: Buckets of Blood, which might be similar to LUFTRAUSERS.