Aiming, shooting, sliding, and jumping through seven levels with the backdrop of Vlad Dracula's clash with the Ottomans. Controls feel good enough, collectible upgrades are cool, and your arsenal can wreck everything in sight if used properly. The pixel visuals are pleasant, and the music ranges from fine to outright amazing. There is a nice little historic plot going on, but it doesn't intrude on the game and isn't overarching enough that you can't skip it, which is how games like this should be. There's the slightest bit of jank, but learning the ins and outs of the game makes it manageable. The Extras section is packed with stuff to do based on your completion of the game and makes it more than worth the cost. Also, the game being fairly engaging and about an hour long (if you're quick) makes it highly replayable.

I 100%ed this game and I love this genre, so I know what I'm talking about. Give this a shot, especially given how cheap it is.

(Edited a typo.)