Classic arcade action at its finest, and the genesis of the twinstick genre. The graphics are flashy, but there's still enough distinction between the enemies and the humans for the player to quickly identify them. The sounds are basic, but memorable and have that iconic Williams sci-fi phaser sound to them. However, what really makes this game stand out is its brutal difficulty. This is quite possibly the hardest old school arcade game of all time. However, not a single death is cheap because of how incredibly quick and responsive the controls are. You are in total control the entire time and the only person you can blame for your failures is yourself. This is the twinstick genre stripped down to its bare essentials. And in this case, less is truly more.