This is Game B of Radar Mission. Rather than a thinking battleship-type game you control a submarine and your goal is to wipe out the enemy’s fleet or his submarine. Harder difficulties give more (and more troublesome) ships for both sides and a smarter enemy sub. Before each round you can choose to take some upgrades though you should beware since if you get hit you stand to lose them one by one and they appear as fast moving difficult-to-hit moneybags on the horizon. That’s the only way to get them back. They also serve to protect you from actual damage until you have none. That’s more than you really need to know about what’s going on in the video though.