This app was mentioned in 7 comments, with an average of 2.57 upvotes
Richard, do you really need the images? The Google Play store does not use the images, just text with a box around it. Google Play (which open source apps are uploaded to) just uses terms like "General" "3+" "Mature" and "Restricted 18+"
Ur-Quan Masters HD is called "MA 15+" in Australia "16+" in the Netherlands (Tor).
Teeworlds is "7+"
SuperTux is rated as "3+"
Openttd is rated as "3+"
OpenArena is rated "18+"
This all seems fairly common sense, without copyrighted images.
Ur-Quan Masters HD: a port of one of the best games ever (Star Control II). Completely free and open source.
I assume this is the one you were talking about? For ease of linking.
Yes, good story aint just text gamebooks for your grandma! Any game is a contender. Amazing good stories:
Epic space travel--
<strong>The Ur Quan Masters</strong>, free link. Star Control 2 Classic space RPG! Explore and save the galaxy as you pimp your ship & recruit an alien fleet.
Street fighting hero--
<strong>The World Ends With You</strong>, $ paid link. Meet the mean streets of future Tokyo. Great encounters and hip sharp modern story.
A darker world--
<strong>Fallen London</strong>, free IAP link, Dark gothic underworld London literary character adventure.
Spiritual music story--
<strong>Lost in Harmony</strong>, free IAP kink, Beautiful rhythm music adventure.