Yes. It is essential to have time to play games.
I've played most tops maps on wc3sear.ch (RPG/campaigns only), and Janne has played some that I have not (including the Wanderers of Sorceria campaign). Unfortunately, I've not encountered a map that would have impressed me as much as King Klear's Zombie Island - Curse of the Lost City, and it still stays as my favorite map (due to its originality).
I would be interested in single player tower defenses that would be the same quality (or better) than Blizzard's TD. I tried Skibi's TD, but its learning curve was horrendous for beginners.
Janne is playing HL2 now, and I spent some weeks playing Baldur's Gate 2 Shadows of Amn and Throne of Bhaal through (the game had been three years on the shelf; still got NWN there :roll: ).
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I'm not saying that we are going to stop creating maps, but it is pretty self-explanatory that the campaign development takes a lot of time. It's almost like a second job now. :roll: Unfortunately, there is no economic income and little other benefits for the job done. Any more time devoted to campaign creation would mean that we would need considerable donations (something like $200,000 a year), which is most likely not going to happen (considering the sum, Blizzard license agreements, etc.). I hope it could be otherwise. We love creating the adventures, too.
Of course, the community could come up with other ideas how to support our work... we need all support we can get.