Downloaded Supertux, but it will not open

I downloaded Supertux ok. But when I click on it it just goes back to the Kano homepage. What am I missing? And yes I have rebooted after the download. Njam and Vodovod both play ok, but not Supertux.
Jeff

The same thing happened to me before my Kano broke.

I just upgraded to a SanDisk 32GB microSD Extreme Pro 100MB/s A1 4K U3 32G SD microSDHC. I did the latest OS OS download to my Imac and then used Etcher to flash the Kano OS to the micro SD. Big improvement in response time for the Kano, I had downloaded the three games to the original Kano 16g SD and I had the same problem with the Supertux game on that SD also. I did a web search and there seems to be a issue with Supertux having a upgrade to Supertux II. I was wondering if anyone else had a problem with it.
Jeff