One-page games are good for /tg/ because their entire ruleset can fit into a single image. When printed, the whole game will fit on a single sheet of letter-sized (USA) or A4 (the rest of the world) paper without using stupid eyestrain-small fonts. Almost every one-page game is free1 or Creative Commons licensed.
1: Which is important since /tg/ would never scans books and hand out free copies. *cough*
Pages in category "One-page Games"
The following 20 pages are in this category, out of 20 total.