Remember when tower defense games first came out years ago and it was like "Wow this is cool. I can't wait to see where they go with this genre." Well, it's still the same.
Appears to be a bug when saving. My last run I had accumulated quite a bit so therefore was able to proceed forward with purchases/upgrade etc. However all of that is gone even after forcing the save in options. Disappointing.
Can you PM me a little more information? We take all reports of data loss extremely seriously. I need to know your OS, browser version, as well as what security settings its at (one theory is that it may be related to security settings preventing the save write to disk, or something along those lines). Sorry for the error! We continue to try to aggressively hunt down any and all sources of data loss!
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No problem!