Bite-Sized Dungeon
Bite-Sized Dungeon is a 9 page tabletop adventure game that you can play with absolutely no equipment.
You can use it to dive a forbidden ruin¸ fight monsters¸ steal treasure¸ and hightail it back to safety---all in the time it takes for your pizza to arrive¸ or for the bus to show up¸ or for the doors to open at the convention hall.
Use your hands to resolve checks¸ play modules from other systems with very little trouble¸ and hack to add in additional content.
Additionally¸ five hexcrawls are included (100+ pages¸) for use with this or other systems.
They are:
Hermitage Of The Harpy Queen The Dread Secrets Of Gullcurst Cape Chaos In The Floating Libraries Exiles From The Interplanar Trash Zone Sleighing Song Of The Murderclaus