Icewind Dale II complete will not launch at all, page 1 - Forum - GOG.com. Icewind Dale 2: The most underrated Infinity Engine game.
: Unlike other Infinity Engine games (Baldur's Gate, IWD1), this game uses the D&D 3e rules . Reviewers highlight that this allows for deep character customization, manual level-up choices, and complex multi-classing.
The Icewind Dale 2 Complete edition on GOG is generally praised by players as a mechanically superior but technically aging CRPG that remains a "hidden gem" of the Infinity Engine era . While it lacks an official "Enhanced Edition" like its predecessor, the GOG version provides the most stable foundation for modern play.