Yeah, I can think of a few that are worse than Solasta 1, but NWN was the most high profile. Although NWN2 main campaign was only marginally better.
I enjoyed NWN2's story (well, except the ending) but the camera in that game is a nightmare.
NWN1's original campaign is very poor. I cheerfully completed the (endearingly goofy) base campaign for Solasta but don't think I ever got past act one of NWN1 (take a drink every time an NPC says "The Waterdhavian creatures!")
I also cut Solasta's dev team slack for being an indie outfit. NWN1 was made by Bioware with a big budget and the toolset is awesome, but there's no excuse for how dire the writing is in the base campaign.
What worries me about Solasta 2 is that they seem to have upgraded everything
except the writing - and that's easily the thing that needed the most improvement. I watch dev vid after dev vid about Solasta 2, and while they are very frank and open about most of the first game's flaws and ways they are addressing those issues in the sequel, they have never said
anything about how bad the writing in the first game was, nor have they introduced any new narrative designers they've added to their team to improve that area.
Solasta 2 with Solasta 1-level writing has a ceiling of being "fun dungeon crawl with great combat, cliched plot, and wooden dialogue." Solasta 2 with good narrative design and writers who can write credible English dialogue is potentially an all-time classic CRPG.
