Banana

Banana is about as simple as a Steam game gets. There's a banana on the screen, you click it, and your banana count goes up. That's the whole active part. The real hook is the collection. Every three hours the game gives you a random banana item, rolled from rarity tiers. Most drops are normal or common, while the rarest tiers are listed at 1 in 400,000 for ultra rare and 1 in 10,000,000 for legendary, and the developers say those odds can change. Every banana design comes from the community, since players submit ideas through the game's Discord. There are achievements to chase as well. It's free to play, and it briefly became one of the most-played titles on Steam. There's no strategy or story here. It suits people who like leaving something running in the background and checking what dropped, or who enjoy collecting rare cosmetic items for their own sake.