I'm just a player that sometimes comes across extra codes and wish to sell them.
Selling Summary
Company of Heroes, 2, Opposing Fronts, Tales of Valor
Medieval: Total War - Collection and Army Men RTS
Railroad Tycoon 2, 3, and Sid Meiyer's Railroad
Spacebase Startopia
Commandos 2: HD Remaster
Dungeons 2 and 3