Live-A-Live has a pseudo sex scene in which your overly excited caveman gets a woman into bed with him. As for blood, many characters die over the course of the game, and one is shown specifically bleeding from the mouth right before he dies from plague.
I present to you my new concept game, Spacegasm 2269.
You play as cybernetic space marine Kilsum Bichiz who was deployed to human colony on Titan where an army of robots has invaded and started ransacking the colony. As you approach the moon, however, your ship's communication system picks up a distress call from an alien dinosaur jockey named Biggbut Rokentetz shipwrecked on Europa who is being pursued by a hoard of zombies. This is where the major decision of the game comes into play; do you divert course and save Miss Rokentetz, or do you hope she can hold her own with only her laser raptor, Goreal, and prioritize the colony?
If you choose to save the colony first, you will find that Rokentetz has been killed, but her laser raptor survived and asks you for help in his quest to avenge his master by killing the secret society of space ninja who released the zombie virus on Europa and turned the entire population the shambling undead. If you save Rockentetz first, you have to lead a small and undersupplied resistance movement against the robot hoard that has solidified its control over Titan led by Lotucus, the prime minister of Titan who has been turned into a cybernetic drone against his will.
In the "true" ending of the game, which can only be accessed by beating both main game paths, you find out that both the robot army and the space ninja were being controlled by a shadow empire of reptilian space communists set on destroying the beautiful democracy and freedom that Spaceamerica has tried to spread throughout the solar system. Together with Rokentetz (who survives in the true path) and Lotucus (who isn't a mind-controlled cyborg), you attack the the space-commie capital of Keplergrad, an artificial planetoid that had been hidden by a cloaking device, where you have to fight through a hoard of six-foot-tall space-bugs that spit acid more corrosive than users on 4Chan and more powerful than Bone's 8-bit game skills.
When you finally reach the throne room of Keplergrad, you face Kaiser Jabrams who uses his giant laser sword to cut out your companions' hearts (which, in case it wasn't obvious, makes them dead). You then engage in a 6 phase boss battle with Jabrams with either a flamethrower or a laser sword (or, if you pre-ordered from Target on a Tuesday between the hours of 9:32 AM and 1:46 PM Eastern US time, a flaming sword made of plutonium). If you succeed in slaying Jabrams, the universe is saved, and you're rewarded with access to the secret minigame - a virtual reality sex simulator featuring Noire from Hyperdimension Neptunia, Hatsune Miku, or Tali'Zorah nar Rayya from Mass Effect (making all three climax unlocks Bayonetta as a secret choice).