Steamworks checkbox

[Former user]

When I was searching for "Tropico 4" and if I ticked the Steamworks checkbox it processed it as "No results" even though Tropico 4 can be bought on Steam.

[ArmoredCavalry]

Steamworks will filter if the game can be redeemed on Steam if you buy it at another store. In the case of Tropico 4, not every store you buy it at will provide you with a Steam key.

So, this is why its filter out when Steamworks checkbox is used.