PNP Arcade's Dungeon Pages [1], Dangerous Space [2], and Power Creep [3] (each of which also have year-long sets). They're sort of one-page tactical dungeon crawlers. Each successive set iterates on the theme, with Dangerous Space being more tactical and Power Creep introducing a crafting system.
Anything from Postmark games [4]. Most of these can also be played with a group, competing for a high score. In particular, Voyages simulates sailing the high seas looking for treasure, Aquarmarine is about diving as deep as possible to see sea life, and Waypoints is about choosing optimal routes on a hike in national park.
Bargain Basement Bathysphere, which has a long campaign. [5]
This Shut Up and Sit Down video has a good overview of some others, too. [6]
1. https://www.pnparcade.com/products/dungeon-pages-core-set
2. https://www.pnparcade.com/products/dangerous-space-core-set
3. https://www.pnparcade.com/products/power-creep-core-set
4. https://www.postmarkgames.com/
5. https://drive.google.com/file/d/1mWjzWDWmzcPDCPeCkZ1LAD7ZLRl...