After a long summer vacation, with as little computer time as possible, I have resumed work. With Zteem.io I have made some quick fixes and needed additions.
Zteem.io is a browser game specifically created for the Steem blockchain. You can try the game at spelmakare.se and find the code at github.com.
On the game site you can login to your steem account using SteemConnectV2, doing so will allow you to post the final score to the blockchain. The game works similar to an old arcade cabinet... If no one plays for two weeks it would be the equivalent to pulling the power cord to the cabinet - all high scores are lost!