I've played majority of RPGM games, from H to non-H, and there's one particular feature in LonaRPG I haven't found in any of those other RPGM games; the dynamic nature of AI. Typically, you can't damage and proc some sort of reaction from a NPC outside of combat, but here in LonaRPG, you can actually do that and create some very funny situation. If it wasn't for this feature, I wouldn't have played this game for more than 30 hours, but here I went beyond 200 hours just messing with NPCs because the game got that much creativity. I usually don't come back to games I've already fully completed but this dynamic AI feature just keeps hooking me in.
As far as similiarity goes, if you know of any, I'd like to play another RPGM game where I can freely mess with the NPCs like here because this is the greatest, most unique and most addicting feature I've found in any existing RPGM games.