Freeware License

Program Krkal (all versions) is free to download, and it can be further distributed for free.
When distributing, the setup or archive must not be altered or bundled with unwanted programs (PUP). Krkal 2.5 setup is protected by a digital signature (Jan Krcek), make sure that the signature is valid when installing.
You get the complete game free. Program does not contain advertisements, micro-transactions or any unwanted or malicious code.
You may use the program, modify the games created within the system, create new levels.
You are using the program at your own risk. We do not assume any responsibility for any damages that arise relative to the use of the program.
It is not permitted to use Krkal as part of a commercially sold product without our consent.
All other copyrights reserved (c) 2018 P. Altman, J. Krček, J. Margaritov, J. Poduška, J. Frolík

Krkal 2

Game from 2004. To the twentieth anniversary (2018) the game was improved and re-released. Version history
Requirements: Windows 10, 8, 7, (xp?); DirectX 8.1 or newer
Download Krkal 2.5 - 20th anniversary edition

Game from 1997. Currently is playable under DOSBox (settings).
Download Krkal 1

Source codes are available at GitHub
Thesis (CS)