This is a very old game and the specifications described above are from the original Amigamejam title not the one in the download , the link from that 2016 game competition is this but not work http://amigamejam.ultimateamiga.co.uk/ , so we need to change the description on this game , any way this is 100% Free no way to buy it , just donations that we think is what you did. Not bought . Grettings