Superfight : 9CQ3B-PZ8N4-90??M

?= 3rd letter starting from z

Cyborg Detonator: 3TI0?-Y2ZK0-5E4?Q
Shining Force: H4WV0-CIITE-80?AK

? = G​

Fine Sweeper: CK?Z?-XLY?Q-4IPGV

?= The number of fingers you have on one hand

Desura no longer exist AFAIK.

https://www.humblebundle.com/gift?key=4R_FPwq65FpPT4_t
_ = Number of words in "Cook, Serve, Delicious!"

Key Drop

Shogun Raiders
SjJaQTYtQUtMVzAtNlkzNUU= (encoded in Base64 UTF-8, just decode with your online tool of choice)

Monsti

MXQT2-9JZN9-4DJXX

9N - XX

Freebie

H4JCT-IEEKE-B7FXX

XX = NV

Ninja class!

X-COM: UFO Defense
0XWH3-QJ450-H3K2V
45 = 97

A freebie for someone:
LF785-8AKFR-4BDZT

Alien Shooter 2: Reloaded : G23QB-8BJVK / DQ3HY
Comix Zone : 0PB7A-AFYIV / WGY33
Freebie : ZKF3Z-Y8M9C / GIP8W
Golden Axe 2 : 33QH0-8BZGJ / FC8FE
Shining Force : 2H3VJ-EQLYL / MYAIG
Shining Force : 2WX57-02H08 / 360EI

DLC
Shogun 2 Blood Pack (DLC) : 0T8X0-X0E7X / D6CTF
Total War Rome II Blood and Gore (DLC) : 0FLYX-JECG0 / BEWHZ
Total War Attila Blood and Burning (DLC) : 0QCBY-YNI4Y / QX2CX
Warhammer 40,000: Dawn of War II - Ultramarines Pack (DLC) : 5BJTX-775MK / LKTC8

Battleborn Starter Skin Pack: #K5BT-9HKJT-ZWSS9-F5FB3-9ZK3W

= H

Please say if you take it.

0Z3Q9-TY7XM-HHI36 ( you have to replace X with A )

Masked Shooters 2:
Y?DY7-5QJDQ-642X4
?=8

Freebie
PEWD8-R8L48-FVDIV

Syberia
WVFONkYtNE5EN1QtWTkyRUc=
Base64

Freebie L3KK9-562NV-?82ZY ?=2

Beast Blaster
D#TIN-CTLVX-RZJ2A

4-1=#

Forge of Gods Dragon Trainer Pack
GPV4M-8NRZA

Break Into Zatwor
PYANW-IFFXI

Forge of Gods: Twilight Destroyers pack
GQIJZ-7RN8H

Kings Guard TD
E869P-RGTII

Masked Shooters 2
7RDZI-THE8H

Forge of Gods Fantastic Six Pack
APN07-L5ANH

Kings Guard TD
6Y4DV-Z60P2

Last keys part: http://nsm07.casimages.com/img/2017/02/27//17022709434218919114879916.jpg

Forge of Gods Dragon Trainer Pack? definitely a DLC
Z2PT2-IT9DX-EL?G?

?= W