? = Giveaway level.

ConcPerfect 2017 4QYJ8-ANGAE-?PCHK
Mission: Escape from Island 63KT?-TYKG0-TJRXC
Lost in the tomb B86D?-FI6Z8-M4972
Glitchbuster B4?V4-GVBQY-XIHE0
Insane Road 5YV?D-2QTH7-D344M
Watergate Xtreme 46?RC-23HD3-H3KWL
Brave Path 44ZDF-BK?L0-0IJLZ
Galaxy Annihilation 4V6KE-GF5N8-XHFZ?
Distorted Reality 48ETJ-9W6GM-EZZ?4
Ballway 5?8PF-H24J8-Q2KTA
Scary House B7CV9-PG?IG-EE9B0
Glasswinged Ascension 5X8T?-7NIZ7-05NAB
Numberline 2 5NBXE-LYJA0-BC5?R
SUDOKU. 485RC-5?FMG-E8Q04
Army Craft 5YP?J-LTCX7-E7TNT
Gulu 4YKY3-QN30?-AXDD0
Dungeons & Geese 5PA?L-7V7MC-6NDL5
The Moon Night 4WQ6P-?H8MG-RJL28
Catacombs 1: Demon War 44RVY-0?PAW-VFI5L
PHAT STACKS 2 5PGJ4-AZJVF-Y?6XN