What would you assume this slot mechanic means?

[Themitrovic]

I'm interested in genuine first impressions from other slot players. 
 

Without looking up the game rules, what would you assume these treasure chests represent based on this screen alone?

 

What would you think happens as the chests gain more skulls/keys and appear to become more complete?

 

Would you assume the state of the chests has any significance for future bonuses, rewards, or feature triggers?

 

Please answer based only on what you think from the image itself

 

[Afi4wins]

@Themitrovic Hi there and welcome to the forum.

Why are you asking these questions, if I may ask? Are you doing a survey or something?

There are some similar games that use those kinds of Treasure Chests to award cash prizes when 4 Skulls have been collected. This game looks the same too. Alternatively, collecting the 4 Skulls may reward a feature game (maybe free spins) instead of a cash reward, perhaps with a symbols upgrade feature.