This legendary arcade title is a cornerstone of the medium, credited with single-handedly transforming video games into a global industry. Released in the late 70s, it features a minimalist black-and-white display where you control a lone defensive cannon at the bottom of the screen. Your task is to repel a synchronized, rhythmic descent of extraterrestrial threats. The game introduced the concept of the "high score" and famously used a heartbeat-like four-note soundtrack that speeds up as the tension increases.