Deleted

Took knightshift key "06GH9-59T4J-?RAZT" which is "06GH9-59T4J-2RAZT"
Isis Simulator "T7FZN-ZPK7T-4MFJH"

I got this:
Chocolate makes you Happy - 2WN?G-8MRJG-WMETQ

Taken, not me:
Chocolate makes you Happy - XCP?F-FYGE8-9B7XE = 8
Chocolate makes you Happy - 62Z5V-DI8WM-JJG?0 = 6

Thanks again ^___^

Picked KnightShift, I think the first of the keys. Thank you for sharing

Dupe:
Virus Z - 2Q79C-X49R?-KBYLF
Virus Z - I0QGI-KF7X?-YZITW
Virus Z - VF5VA-B?2CJ-I37X8
Virus Z - RNBD8-BA?3C-MWCYX
Virus Z - IERF7-V?GQT-IEZ0J
Virus Z - NGKQ6-HK7GC-HA?K9
Virus Z - JTGMV-AY75A-76?3H
Virus Z - LFHBH-ZXGEQ-MX?NT
Virus Z - 3Y8Z5-M4?4A-THJVZ
STEP SISTERS EP 1 - N9F8?-DVAMH-YNIMJ
STEP SISTERS EP 1 - DQIXE-2IJZH-?2RZ2
STEP SISTERS EP 1 - XFNZ0-W5?F0-QKYIH
Zombie Murder - BBJD2-5ZIC4-8YB?Z
Dojini - 35L76-I?IMY-F8ZN6
Dojini - HG2I5-0N272-BPEL?
Dojini - L2ZW2-MGBPK-D7?QN

A friend activated it:
ANIME FIGHT IN THE ARENA OF DEATH - ITEHF-NPLX?-4GXLE

I update this list each hour.

ANIME FIGHT IN THE ARENA OF DEATH - 622FP-F4ZRJ-?QCG4 -Taken, but not me

I got nothing....XD
Steam block me temporarily. XD
Thank you for sharing though.

I got:
4RC4N01D! 3: COLD SPACE - T4HZ4-V9CR?-WIMLX

Taken, not me:
Chocolate makes you Happy - 62Z5V-DI8WM-JJG?0
Chocolate makes you Happy - XCP?F-FYGE8-9B7XE
Chocolate makes you Happy - WKVL7-BJP?2-TX8JE
Chocolate makes you Happy - 47BR6-Y?C20-ZGMRP

EDIT:
GLITCH SIMULATOR - F?6GA-BPE8H-7JWK0 Invalid for ? == 2 - 9

EDIT2:
Taken, not me:
Zombie Murder - YAKYT-7PVZB-D?RKZ
Christmas - T5?K4-MAH3G-VE58R

Knightshift - C5393-6NMP7-C0?RQ

Used :
KnightShift - CH5GI-P9?GH-9WA2W (CH5GI-P96GH-9WA2W)
KnightShift - 43209-C?ZNG-AWFB0 (43209-C8ZNG-AWFB0)
Not by me

Kilmonger - VZEBW-JQFBL-QR85E
Kilmonger - 9VVWM-FQTRN-WV3BV all taken not by me
Kilmonger - TP629-X82ZM-ZVYRX

Thanks for
OHOTA KREPKOE SOUNDTRACK - HIEWG-5VV3N-50J3Z
Kilmonger - CZ3L4-K80YG-4MQG?

KXTEV-?D9KF-D5E47 is already used but not by me

ITEHF-NPLX?-4GXLE Has already been used, not by me.

AHFHW-?BCHA-5TIFR (anime fight) and ATD6A-YQHZY-VD?CE (enclave) Activated by me! Thanks!

EXQYR-KXLYL-42G?T Also activated, not by me

X-Blades EHH74-70VWC-VLDIP, has already been used, not by me.

064J8-HLWTX-KK?E4 and WZYLW-CJHML-?K7FE duplicated. Thanks for the chance! :D

Thank you very much for 5H0P0-ITZEQ-5HZ?P - Knight Shift !!

Too many attempts, couldn't try more keys to tell if they have been used

New batch checked from people that i know.

Dupe:
PLANETS UNDER ATTACK - RNC?Z-08TFM-TJ926
PLANETS UNDER ATTACK - NFPGM-IFXW?-JIM6H
PLANETS UNDER ATTACK - ?LTG0-YQTH4-HQXTV
PLANETS UNDER ATTACK - MAJXK-K2V?Q-7GYRB
PLANETS UNDER ATTACK - ?0A7E-7BQX6-BTBXZ
PLANETS UNDER ATTACK - 5V9A?-72FF7-DJZ8G
Kilmonger - EFH79-K98H2-M?9LX
Chocolate makes you Happy - G9F0N-MCX8Y-Y?LNF

A friend took:
Chocolate makes you Happy - QDM?J-L8WIX-CLF0T

Kilmonger - 789P7-YNZWR-HE8EQ already taken

These are all duplicate keys:
Kilmonger - 83?9Q-KZAR0-JW37P
Kilmonger - 000?K-09C45-W9TGK
Kilmonger - 32C7K-PZ?GL-H0YL7
Kilmonger - GXNK3-24E?0-AGZPJ

But thanks for OHOTA KREPKOE SOUNDTRACK - 9ADRA-48R96-A8K2H 👍

I got KnightShift - BMG2N-QQY?N-LQ9KL, thank you!
Taken by someone: X-blades - MN3A?-0J0WM-V5NBY

X-Blades - H4TZY-H94KB-ZPY?C already taken
X-Blades - 3RWA0-86R50-?ABPZ already taken
X-Blades - 6QBC?-CAG0N-KMLWA already taken

X-Blades - 2ZYLG-EMKC?-4GY08 ?=2 activated by a different Steam account.
X-Blades - LPBB?-0MZY3-7FT8M ?=7 activated by a different Steam account.

X-Blades - QEHEJ-?DZC0-NFZPE QEHEJ-9DZC0-NFZPE -Invalid
I might have skipped a number when activating key so I'll try again after cooldown.

KnightShift - P5J0P-G9WYX-MA0?Q (P5J0P-G9WYX-MA05Q)
KnightShift - L2YXX-?RMQ5-6YRXN (L2YXX-4RMQ5-6YRXN)
Also dupe ... (not by me)

ISIS Simulator - 76W?5-EH8N4-M562J is taken, not by me

Xblades VRI7A-6ETYC-K8M?K taken, not by me

Xblades FDY5K-G2VLP-E?8LB also taken, not by me