Orphan keys drop thread

Cities: Skylines - After D4rk: YL8V7-FYL0V-HL?MX

The first character of the game's name...

Robot Pirates 3?LNG-PPQRJ-FIDTR
Naninights BK5JQ-BPLR6-C?MYI
Nary 6I2CD-I3C65-QJYP?
Demented Pixie 3WPTQ-EBHWX-G?9HF
Neocolonialism Q963R-2?22R-7VTI8
Lead and Gold: Gangs of the Wild West 8JWQ5-NPNR?-LMTLP
Pertinence BC3LC-BME3?-BCK9R
Désiré 7946W-NIP9W-9?ZEC
Let There Be Life 66A7Y-E77VL-VC5?C
Kholat 8HYW?-WJ0LD-WERK6
Graveyard Smash 7T2K?-74P82-5K60G
Cuties 9L5I?-4M072-XRIEQ
Rage Parking Simulator 2016 3D287-5B864-G?X6F
Nether: Resurrected D?WGM-3EJBL-0QXCI
BeeFense 47AH4-KA9IP-34G?T
The Morgue Fissure Between Worlds 5MJ5?-87HDD-63DNL
RONIN 32L8D-IH9HP-L8?80
Lazer Cops 862KN-A3QEH-C?VQ6
Rise of Prussia Gold 2D4MA-JH0C9-00CT?
Witch's Pranks: Frog's Fortune Collector's Edition XJFZY-W?WH9-LBGB2
League of Mermaids V62B5-JFG0X-?3Y5X
Age of Survival BZ4N2-C4QL?-0MAH0
Laraan EJFG?-RPM7P-BPHPK
Ranger of the jungle 7G2PW-E?EKZ-IPPAT
VR GirlFriend 5JQP?-ZDJ4C-M3DL6
Abode BJ?89-PKRML-FZVKK
Nanooborg 4WD2Q-LZ6?2-57LBN
Last Horizon 3HC?Y-GJT5H-27QVJ
Legends of Persia BZ02T-N5DLZ-ZC?RG
Battle Forever 5T64N-DA?86-C5KZQ
The Last NightMary - A Lenda do Cabeca de Cuia AAC73-663?E-D6EAK
24 Hours 'til Rescue 3AJB5-Q?X40-YXCWP
Adam and Eve The Game - Chapter 1 6ENV?-HTGV8-6AXFA
Luckslinger BA?7C-YFRDQ-CJ6XE
Redline 750W?-ATQIT-4QNZ4
Nightfall: Escape BBXEG-PG?W5-2LR9P
Knights of the Sky 84F0C-G?4GV-TI4JW

Frostpunk Original Soundtrack : E?H4G-FK?5G-ZCAK?

Battle for the Galaxy - Ice Bastion Pack : VE?VA-46LRV-AXJXI

Occult RERaise : MTDLH-6LNCH-JP?ZK

? = Jersey number Allen Iverson, Chris Paul and Rex Chapman wore most of their careers.

(EDIT: added more games; btw all the keys are for additional content so you need to own the base game first)

Ultrakanoid: 6LB6?-8EC?C-T84MN
Just tell me if the key worked
Y = ?