Zombie Hooker Nightmare, a game about zombies, hookers, nightmares, and more zombies. Just in time for Halloween. Grab a gun and mow down some undead.
A quick review of the rules of ZHN...the game is divided into two Episodes, both available from the title screen (but they don't connect to each other).

Instructions:
Arrow keys - Move Lola around
Space bar - Attack. Uses current weapon if you have one or punches and kicks if you don't.
X - Tempt nearby Johns and make them follow you.
Touching Johns - Makes them follow you.

Guide Johns back to the trailer to turn tricks. Reach the night's quota and enter the trailer to progress to the next level.
You don't have to touch Johns to get them to follow you. Pressing X will get almost any John you can see on the screen to follow you as long as zombies aren't currently attacking them.
Weapons have a set amount of ammo/strength. When you use that up the weapon will disappear. You'll have to scramble for another weapon or just punch and kick your way through zombie hordes (but that's a lot harder to do).
As long as you don't completely use up all the ammo or strength of a weapon (strength/ammo greater than 0), it will recharge when you enter the trailer to go to the next level.