Abuse is a detailed shooting game. Although it is commercial software freeware versions were created from the public domain source code and graphics of them game. As the only person immune to the abuse gene, you must fight your way through mutants so that you can save the world and escape to freedom. You can use various weapons and abilities (i.e. flying) to fight through the humans who were infected with the gene. There is also a level editor (using command line parameter -edit).
