Timeslaughter

Released in 1996 for the DOS, Timeslaughter is a fighting game made by the largely comedic Bloodlust Software, made partly to make fun of the surge of violent fighting games that followed Mortal Kombat.

Scientist William Spade is very close to completing a fully functional time machine, but has little time to celebrate when four members of a race of time-worshiping demons known as the Takar pay him a visit. Staine, the Dreg, the Surgeon, and the Butcher torture Spade within an inch of his life after he refuses to surrender the time machine before its completion. After losing both arms and his left eye, Spade manages to activate the time machine with his nose, sending the Takar back to where they came from, but causes a huge rip in the timestream in the process due to prematurely activating the machine.

As a result, combatants from unique time periods are zapped randomly from place to place, each with their own reason to fight - none of them knowing where they will go next. Spade rebuilds his body, renaming himself Portal, and is now more than ready to defend himself from anyone who might be warped to his plane of existence — including the Takar.

Under the frankly ugly graphics, the core of Timeslaughter is surprisingly good if you consider it was made by just two people. A shareware Fighting Game offering multiparallax backgrounds, 3D floors, a ton of digitized speech, blood that stayed on the ground, visible damage on the fighters, several levels of difficulty and speed... and was also quite smooth to play, wasn't really something you saw all days on DOS in the mid 1990s, unless you were dealing with the official conversions of Super Street Fighter II Turbo and the earlier episodes of Mortal Kombat.

Although it was originally sold, the game and a "director's cut" version (really just a functioning beta with some different art assets) is now freeware.

A sequel was in the making but, due to Real Life schedules of the authors, it's unlikely it will ever see the light.

Tropes used in Timeslaughter include:

Bloody Hilarious: The game tries to be as silly with its gore as possible.
Bonus Boss: If you finish all fights with the Slaughter move, and never use continues, you'll fight Staine before Portal.
Dracula: Vlad III is a playable character, mixing both his status as "the Impaler" and his identity as Dracula.
Eye Scream: one of the most infamous moments of the game, from the intro: Spade gets an eye removed with a drill. Even with the game's amateurish graphics, it's painful to look as it sounds.
Fartillery: Mojumbo.
Finishing Move: Slaughter moves, which more likely than not completely dismember the opponent.
Fish Out of Temporal Water: The entire cast. Most endings show that they are unable to return to their original time, and how they adapt to the new situation. The results are, like the rest of the game, Bloody Hilarious.
Gorn
Handicapped Badass: Jinsoku is blind, but you'd rarely notice considering how well he fights.
- Buddy. Just... Buddy. He's a hidden character, but his Tardwagon charge is easily one of the most powerful moves in the game.
Head Swap: Hidden characters Buddy and Ravage are just bad sprite edits of Ug and Savage, with new heads and a few differences in the moveset.
Hollywood Tourette's: Savage. Or at least that's what he says.
Idiot Savant: Ug the caveman isn't very bright. That's why he lets his club do the talking.
Names to Run Away From Really Fast: Savage.
Overdrawn At the Blood Bank: There WILL be a carpet of bloodstains on the floor by the end of any given round.
Off-Model: The drawings in this games are awful, to say the least.
Power Born of Madness: Asylum can't even use his arms, and yet he's capable of killing people far stronger than he would normally be.
Shout-Out: A group of demons who torture a man so badly he's lost his sanity by the end of it.
- The title of the game is a clear nod to Time Killers, and the story of both games involves fighters taken from several points in time against their will (although the reasons for the happening are different).
Split Personality: One moment Asylum's acting like Peewee Herman, the next he's Adolf Hitler.