Indiegala 4 giveaway (kinda puzzely)

In here I will giveaway the codes of 2 indiegala 4 bundles (BTA) ! You might want to check the comments for hints. I'll try to make it a bit puzzely.
Ok first key for Steel Storm real quick. No time to make it puzzely now:

6GYGN-GE0T3-2DEYM Gone I guess.
A.R.E.S:
6GYNG-K8F0A-Q3H0N Taken!
For the noobs a question mark means you need to guess.
Alien Shooter: zesDTDG-EQnegenHvier-vierIYachtK taken!
This time I replaced every number with their dutch translation. Easy if you are dutch. Come on dutch ninjas!
Ok the next one for Disciples 2. This one might be difficult but if you think a bit you should see the answer lying right there! Code: JuQIoa taken, it was a bitly code. I changed it to another code, taken aswell. I forgot the old one for the interested, sorry.
This one should just be a tiny bit more difficult to find. Code: fajjdw
This one is so difficult you might need to google it! Code: 21TFo and taken so that were the keys of the first bundle!

I'm making something difficult for Altitude, please give me some time!
Ok here it is, I'll give you the first step for free: https://www.dropbox.com/s/0803j5gq21vq6iz/Do%20ninja%27s%20have%20Minecraft_.rar Taken!

Encryption: dLsPARO9DaC16rL96as/WFOyWK74 And it's gone!
Ok 1 more: 1898.565263418831, 1800.7089604689483, 1587.4058346335368 use the key beaninja. Good luck! Taken

?GZ??-?RMQ?-JTNKY 3X12:9+2, 156X10^0+1, (x^2):2=x, 6^2:12, 1X10^0+2^2+9-3^2 Don't mind this one it isn't right. It's taken tho.
Ok next one, it´s a quite basic encryption: aHR0cCUzQS8vczcucG9zdGltYWdlLm9yZy93ZDNmNzdxcmYvbmluamFhbGllbi5qcGc= This should work now! And it's taken I think.
Ok the next one: D6fxqOzdy0pRqdeMqmPd3mF/v83FnrPbwbpdE47oD=+LX6iRy8YVw8L1zo7RE=fFqKiMDWNW Good luck! It's taken but you can still try to solve it it's fun!