What if the Roman Empire never fell, and instead discovered gasoline and gatling guns? This is the alternate history Turkish developer GHST Studios is presenting in Dieseldome: Oil And Blood, and a new demo has been released on Steam as part of Steam Next Fest.

Dieseldome mixes gameplay elements of Doom and Vampire Survivors, as it puts players in the role of a gladiator sentenced to death by combat. They then must fight their way through hordes of enemies in fast-paced first-person action where speed and mobility play a major part in each battle--the player can bounce off of obstacles and run along walls while fighting.

Defeating foes, completing parkour-style challenges, and winning "bets"--the Dieseldome equivalent of quests--earns XP, which unlocks power-ups for the rest of the run. At the end of a run, the player will receive in-game money, which can then purchase permanent upgrades for future runs.