2 games 1 TF2 key

other than a couple exceptions at the bottom:

mcpixel

aquaria

nightsky

thomas was alone

fractal

avadon: the black fortress

splice

little inferno

sword and sworcery

solar 2

virus named tom

for 1 key each:

avernum 2nd trilogy

bastion

rocketbirds

oil rush

crayon physics deluxe