Name: Flare RPG Game/Engine
FLARE is an isometric RPG engine reminiscent of the Diablo games. A few games have been created for the engine, including one by the same name.
How many users do you anticipate will use this software? As many who like RPGs, particularly who enjoy(ed) playing Diablo
The engine and game are both in current development, though the average release speed is about once a year.