Inspired by the recurring topic every Steam sale over at /r/GameDealsMeta:

• What are some lesser-known or overlooked Steam games that you recommend?

• Are there any genres you’d like hidden gem recommendations for?

If you're interested in previous Hidden Gem topics, you can find them here.

For popular recommendations and general purpose sale discussion, please use the main Steam Sale topic.

Optional: Feel free to categorize your recommendations by number of reviews (as a proxy for popularity)