I need ideas for science-fantasy stories. Could I get some help with getting some story bases? I'm looking for both literals(people that make reality based fiction) and geeks( people that make just plain fantasy). Any ideas are welcome!

What about a teenager who get trapped in a video game world based a story (peter Pan,wizard of Oz,etc.)
And all the boss battles are like muntanted versions of the antagonist

Actually I don't have something special...
But... A story based on something like school, forest, dragoni etc... Like Teen mbwa mwitu with dragons(Yeah, sounds weird, I know xD).
P.s. I like Teen mbwa mwitu and dragons, lol. xDD

honestly ever since i watched fate/zero the whole battle royale over a common prize is an amazing concept to me. just twist it to include some science base

Umm, a guy gets sent a letter that his daughter au something gets kidnapped. He then discovers that in the letter is a ring that grants him special powers, and he must use it to travel all the planets, defeating a boss on each one. I dunno. XD

(Okay I'll try. Hope wewe like the idea, maybe?)

Humans finally have the technology available to them in order to travel the far reaches of the final frontier. NASA first sends out a test ship with supplies and 5 men intended to reach Mar to test and observe the new technology. Its a success. Over the inayofuata decade NASA sends out these 'test' ships with some coming back with merely with a scar vs. one ship literally being blown up into tiny little pieces. They soon reach the point where the technology is now considered salama enough to send humanity up into space if need be. Its needed. At this point in earths history we humans have polluted the earth pass the point of being able to live here. So (like in Trigun au similar) the world leaders agree to send 20 ships, only holding 1,000 humans, into space genetically frozen to Mars. When there the frozen humans will thaw out and awaken once again with a purpose in mind survival and rebuilding a new nyumbani a new earth on Mars. The ships never make it however. Only one survives. A infant is born on the cold flying heap of metal in space with only a temporary mother to care for it. The ships were also supplied with plants and such with the hopes of recreating a new earth somehow in space, but over the decades the plants grow and take over the ships and cut off their power. Only the Mother ship of the ships survive because it was the backup if all fails. Well all failed. Back on earth all the stubborn stragglers soon met their fate and earth is alone, but not dead. See I alisema unlivable not nonrecoverable. Earth slowly regrows itself to where it was back in the dinosaur days unkempt and wild but beautiful and teeming with life, but not conscious life. The fate of the child is decided kwa the 49 still reminding humans alive. He is to be send to earth when he is a adult. Humanity is dead with no zaidi supplies but this child still has a chance. This story is about a human for the first time seeing their nyumbani planet and experiencing the riches of being alive and learning of their humanity. But he was told never to kill another life form. Humanity is suffering their punishment for doing this, but with this human child their rights will be washed clean with a human living with the world as one for the first time as equals apart of each other. This story is about the last man standing. The last human alive will be called Life. 'Humans will not end in bloodshed but in peace and love.'
Only when wewe are at death's door will wewe be able to see the true beauty of life.

(I'll let wewe handle the details and science facts. ;3)

Well, I'm not really good at things like this, but I will give it a try.

What about an ordinary high school student who after eating something that seemed like a normal thing gets transported back to his past. And to return to the real world, he has to find out who made the thing he ate and why they made it?

I have an idea when it comes to Time-Space travel. How about a researcher who attains the possibility of traveling into Timespace? A typical looking Time Travel machine has been created. However, the moment the researcher activates it, a distortion is being created which results in multiple dimensions and time periods mixing up with the current one, shifting the world into something new. A paradox one !!!!

I'm sorry my friend I'm not good with this sort of thing