Games like Postal 2: Corkscrew RuLes!

If you finished Postal 2: Corkscrew RuLes!, the closest matches are Evolve Stage 2, Plants vs. Zombies: Battle for Neighborville, Ghost in the Shell: Stand Alone Complex, Shell Shockers and Offensive Combat: Redux!. All 6 share its shooter genre and are ranked by how closely their themes and modes overlap.