Over the past two days, there have been Tweets about OpenTTD with Snap store links that are broken. Here are two Tweets:
https://twitter.com/ubuntu/status/1266701147152269315
https://twitter.com/snapcraftio/status/1266399925358731265
It would seem like the Snap is no longer available. Using a variety of searches shows no results.
Maybe this suggests a feature request for leaving snap store pages up with “No Longer Available” or something similar?