All these are Steam games and are bought from
Hot Random Keys so they're are guaranteed to work, I can give you the code or gift you a tradable HRK key (needs HRK account)
Tier 1: $0.35 in BitcoinAlum
Bloop
CortexGear: AngryDroids
Future Wars
Garshasp Monster Slayer
Namariel Legends: Iron Lord Premium Edition
Praetorians
Red Lake
Selfie : Sisters of the Amniotic Lens
Teddy Floppy Ear
The Few
Wooden Floor
Woodle Tree Adventures
Tier 2: $0.50Agent Awesome
Dark Sector
Meridian: New World
Tier 3: $1DarkEnd
Grotesque Tactics: Evil Heroes
The Incredible Adventures of Van Helsing