Can't find sci-fi, alien, really strange jobs for sims. Maybe not so hard to create my own?

Have you checked the downloads here at MTS? There are 57 pages with custom careers. Sure you will find something there.
http://modthesims.info/browse.php?f=229&showType=1&gs=1

Edit:
Maybe some off these will suit you?
http://modthesims.info/download.php?t=472681
http://modthesims.info/download.php?t=427897
http://modthesims.info/download.php?t=293537
http://modthesims.info/download.php?t=275456

Yep, that's the first place I looked. No "Space invader", "crazy alien", lots of whimsy or drama.
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Just saw your links: THANKS! Don't know why I didn't see them before..
Wish there was a way to make them a LW..

@grammapat
There actually IS a way to make them a lifetime want.
Writing a tutorial on how to do that is on my to do list right now.
I need to write it first and then try it out with only the things written in the tutorial in mind (not that easy if you've been a creator for 7 years) and then edit the tutorial a bit so everyone can understand.
I hope to have it online by the end of this week.

Btw: I love to see my career Out To space (one of my first self written careers) is on the list.
I saw it needs an update for the icon, screenshot and PTO, though. And with this said it's added on my to do list.

@lientebollemeis ...I'm completely clueless when it comes to makin things and don't really talk tech speak ... basicially I'm an idjit .. teehee .. err .. oh yeah .. point is .. I could be a tester if ya needed for a LTW mod.

I'll try and watch creators feedback thread, but if ya put it up and I don't see it .. go ahead and poke me :p

@CaliBrat Very nice of you to volunteer as guinea pig 😉
I'll write the tutorial and let you have the scoop for testing. I hope to finish it this week (but my chore and to do list is quite long...)

So excited to hear this! Will they be NEW LTW or will they replace old LTWs?

Sorry to put a bummer on this thought.
You'll have to change the lifetime want sim by sim with simpe.
So it are not new lifetime wants.

Dear me. you'd think with the new sliders and horizons the past year we'd figure this out too. Still looking forward to your tutorial.

LTW can be changed with the sim blender.

But with simblender you can't have an LTW: "Reach the top level of the Ice Cream Vendor career" (or any other custom career).
With my tutorial (published for testing on my blog btw) you can.