Cool idea! For clarity, is it tabletop games as in printed, physical copies, or pdfs to be printed out? Are you expecting print-and-play boardgames with components that are cut and assembled, or tabletop rpg type games that are more like manuals?
We're accepting tabletop games in either print-and-play or TTRPG format. So long as you have the rights to distribute the projects, and it doesn't require outside resources (like additional rulesets or proprietary dice) it's fair game.