I'm not big when it comes to activists (the phrase 'uppity hippies' comes to mind) but when the cause is right I can get behind it. Whaling is banned by most countries, including Japan. However, they have a work-around called 'lethal-sampling' in the name of research. In order to 'study' whales, they kill them. They aren't fooling anyone. Enter Conor O'Kane.
Conor has created a Cetacean Research Simulator in the form of a vertical shooter. Play the part of a Japanese 'Research' vessel (gosh I'm using a lot of quotes) and hunt whales in the Antarctic. Harpoon them and collect their meat for research (and cat food apparently) while avoiding icebergs and Greenpeace. Each level ends with your vessel unloading its meat onto a barge in blood soaked waters: subtle.
The first time I played 'Harpooned' I felt uneasy about shooting the whales, but that's the point. You are the bad guy in this and the outcome is certain and final; and is unfortunately quite realistic.
You will have fun playing Harpooned, and you will probably feel guilty while doing so.