Yes, I have seen this a couple of times where the progress indicator just keeps on whirling and "waiting to install", but nothing installs.
What I found cleared the problem was to back out of that page and then retry to download/install.
It seems to work OK then!!
Just tried and had the same with the free app "Cordy"
Hit the back button and retried to install again and it installed OK.
Note, it does not do it all the time, so no great problem for me!!
Also looks like a fun game as well, so thanks for posting because I would not have tried it otherwise
Hope this helps