<p>Celebrations for the 40th anniversary of Space Invaders were marked by the opening of an exhibition based around the game at Tokyo’s Roppongi Hills Observatory on January 11.</p><p>The exhibition, which runs until January 31, includes a number of</a> interactive elements, including a fun-looking take on the game where players can jump around a life-size version, trying to dodge (virtual) threats from pesky alien pixels.</p><p>Tokyo-based, German-born blogger Anji Salz</a> shared footage of herself and a friend playing the game to Twitter. Credit: Twitter/salztokyo via Storyful</p><br />