AllKeyShop often lists deals for Steam CD keys from various vendors.
G2A also lists the game for those looking for global Steam keys. Buy NeonCode CD Key Compare Prices - AllKeyShop.com NeonCode Download PC Game
A free techdemo for the sequel, NeonCode 2: Blue Tiger , is also available on fubenalvo's Itch.io page . PC System Requirements AllKeyShop often lists deals for Steam CD keys