Developer: Playdek, Inc
Buy it here
Although it's also a D&D game, Lords Of Waterdeep is completely different from Tomb Of Annihilation — or any of the other D&D board games, like Wrath of Ashardalon or Castle Ravenloft.
Rather than plundering a dungeon or fighting off orc hordes in Lords of Waterdeep, you'll spread your influence across the city by constructing buildings, engaging in intrigue, and completing a variety of quests.
No considering it's quite a bit cheaper than the original physical version, the Steam edition of Lords of Waterdeep plays faster than the board game as well. You can play for three or four hours while referencing various rules.