While Steam has strict rules, they do host "unrated" or adult-themed strategy games. You may need to adjust your account's "Store Preferences" to see adult content. Essential Safety Tips for Downloads
Look for comments from other players. If a download is a virus or doesn't work, the community will usually flag it quickly.
Many indie developers host their games on their own websites or through Patreon. This is often the most direct and safest way to get the latest version of a game.
