If you are having an error while opening the client today - please follow the steps:

1. Go to %appdata%/Kasteria/Kasteria_v3.0
2. Copy lootconfig.otml, config.otml, minimap.otmm and hotkeys_1.otml
3. Remove Kasteria_v3.0 directory
4. Open client again
5. Close the client
6. Paste previously copied configs into Kasteria_v3.0 directory

Voila, client supposed to be open without any issues!
Legacy world starts in:
10 February 2026
Character information A
Name:Rimuru
Gender:female
Profession:Elite Knight
Level:71
Residence:Darashia
Last Login:19 March 2026
Account Status:Free Account
Created:9 February 2026
Last experience
DateExperience
18/03 7:00 - 19/03 7:00This player has not gained any experience this day.
17/03 7:00 - 18/03 7:00This player has not gained any experience this day.
16/03 7:00 - 17/03 7:00This player has not gained any experience this day.
15/03 7:00 - 16/03 7:00This player has not gained any experience this day.
14/03 7:00 - 15/03 7:00This player has not gained any experience this day.
13/03 7:00 - 14/03 7:00This player has not gained any experience this day.
12/03 7:00 - 13/03 7:00This player has not gained any experience this day.
Latest deaths
28 Feb 2026, 09:30killed at level 72 by fallen mooh'tah master ghar
25 Feb 2026, 18:37killed at level 66 by a giant spider and a medusa
22 Feb 2026, 16:49killed at level 58 by Lulax
19 Feb 2026, 17:53killed at level 46 by a hydra

Account characters
NameInformationStatus
1. Rimuru (currently viewing)71 Elite KnightOnline
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