There's an upcoming RPG I'm pretty excited about called
Realms Beyond: Ashes of the Fallen. Players can create / control a party of up to 6 characters. It turn-based tactical combat on a hex grid and using the Open Game License (i.e., 3.5e D&D rules). They're also releasing the game with the editor / toolset so it will hopefully have some good user created mods eventually.

It's
currently on Kickstarter at around 93% of the goal with just under 5 days to go.