Talking like mprotags didn't get 99% of all the cool and hot monstergirl action.
And how many of those include Female, Futa/Trans protag And the Female Zombies the Male Protag can fuck?
A lot of the games with Male protag and Monster Girl don't have Zombies in them the player can sex, more often it's a Female character getting railed by zombies in players party.
Given there isn't a "Zombie" tag the alternative is "Necrophilia" which if you add the tags "Male Protagonist" "Monster Girl" "Necrophilia" in the Narrow by Tags you only get 8 games to choose from.
If you remove the "Monster Girl" tag you get 26, narrow that down to Completed you get 13, Narrowed down to Abandoned you get 5 leaving 8 that are more likely to join the Abounded state.
The problem with "Necrophilia" tag is a lot of the games that qualify for that particular tag Like This Game don't get one which makes narrowing down what you want is like trying to find a gold needle in a needle stack.
I can narrow it down even further by the type of game.
VN, 2D Game, Text Based, 3D Game, 2D CGI, 3D CGI etc.
Even Game Engine preference.
Games with Zombies "Necrophilia" or animals "Bestiality" Female Protags or Characters/NPC get more action and service than Male Protag overwhelmingly so.
I don't like playing Female or Futa Protagonist's, as i am a male i find it weird and immersion breaking.
If the option to choose whether you play as a Female, Male, Futa or whatever is available i'm fine with that, means others are more likely to give the game a try they otherwise wouldn't have.