The game was free with an ad-banner during gameplay. I was making a decent amount in ad clicks and also had players emailing me for a paid version that just disabled the ads. Instead of jumping on this to release a paid version and expand the game with more features, I ran into perfectionism issues + decision paralysis releasing any changes.
The game blew up for a few weeks and I got something like 0.5 million downloads eventually but didn't do anything to monetise it more so felt like I missed a big chance.
It was a great feeling checking analytics though to see that there was literally years of collective gameplay time being logged, and I've had several emails and reviews from players saying they've been addicted to playing the game for years.
My biggest lessons are probably:
1) Doing/releasing something is always better than doing nothing so don't let decision paralysis get in the way. "Don't let perfect be the enemy of good".
2) Don't fear releasing or making changes because you might get bad reviews. You'll never please everyone and even the perfect app will inevitable get some brutally unfair and weird/crazy reviews.
3) Some people are obsessed with word games!
Anyway, as a lockdown project for fun, I started making a new web version for mobile + desktop. :)