Tsuno is adding rules to this list rather frequently, new stuff  in bold.

-Uma 5-10, 5-15, 20-50
-Wareme
-No Tochuuryuukoku
-Houra renchan
-Add 1500 points to the hand value for each renchan counter (normally 300 points)
-Washizu
-Yakitori
-Can go below 0
-Atama hane
-Two aka dora in each suit.
-Noten renchan
-Oya doesn’t change until someone wins a hand
-Open Riichi
-Start with 2 dora indicators
-Can ron on an ankan with kokushi musou
-Kanzen Sakizuke
-Flower tiles
-Other local rules
-Always 2 han Shibari
-Aka dora count as Yaku
-Shizumi Uma (???)
-Return riichi deposits if Ryuukyoku
-Noten payment adjustment
-Iichan
-Can not change your wait after riichi
-Okkurikan Ari (???)
-Aotenjou
-Chombo ari (something about changing the riichi button)
-No tsumo payment decrease in 3p