I had an idea a while back for a shooter where you play as a kitten who works as an exterminator, and you go into these little mouse cities that are themed after whatever kind of building the mice are infesting and you gun them all down. Sort of a combination of Hotline Miami, Postal, and ]i]Grand Theft Auto[/i], but woth funny animals and corpses that can be devoured for bonuses and/or powerups.
That is super dark...I like it.
Other features/details I've considered for this game concept:
-Mouse disguise. Disguise yourself as a mouse
-Several scoring methods; speed, stealth, gruesomeness, style, completion
-Most mice are civilians - (women and children mouse civilians too); you may have to chase them down and/or find them in hiding for full completion
-But many are too naive to flee immediately upon seeing you however; they think they're in something closer to the type of funny animal cartoon where species is purely cosmetic
-Many of the other characters are the opposite, and more than usually/realistically hostile towards vermin.
-Alternate roleplaying solutions to levels. Instead of hunting them all down, you may be able to, for example, ask around and find out where their main water supply is and poison it.
-Maybe borrow the psychadelic catnip thing from Postal 2; it's more apropos here anyway.
-There needs to be a crazy large number of weapons, including use of non-weapon objects as improvised weapons
-Dismemberment should be modeled at least as extensively as in Postal 2 or Fallout New Vegas. Preferably moreso, like limb and organ damage in Dwarf Fortress.
-Lots of weird theme levels and weird mice subtypes. Elemental mice, mermice, robo-mice. There's a lot of more normally themed levels too though.
-Procedural level generator in addition to prefab levels.
I wonder how much it would cost to have this game made. Maybe I could do a kickstarter.