Finger Slayer is an engaging arcade game designed for iPhone and iPod Touch users, focusing on testing and improving reaction times. Players must place their finger on a guillotine circle and wait for a countdown before quickly lifting their finger as the blade drops. The goal is to achieve the highest score possible by timing the lift perfectly, as premature lifts result in game over. The game has gained popularity, ranking in the top 5 overall apps in over 50 countries, including the USA.

The game features an endless mode, realistic sound effects, and Game Center support for score comparisons with friends. Players can unlock achievements and enjoy a more immersive experience by enabling vibrate features. Finger Slayer provides a fun and competitive platform for users to challenge their reflexes and compete with others, making it a must-try for arcade game enthusiasts.