The Canadian studio Digital Extremes has published data on the chances of losing all game trophies in the free-play action-MMO Warframe.
The document contains a complete table of loot, which can be obtained in Warframe for killing mobs and completing missions, indicating the chance of the probability of a particular trophy falling out as a percentage.
In addition to the obvious benefits for gamers, these data demonstrate to developers how the game system distributes loot and maintains a balance between those who prefer to knock out game items from mobs and players who buy them for real money.
Warframe allows you to get almost all the content without transactions, extracting blueprints and resources needed to create weapons, equipment and new game classes.
However, in order to expand their arsenal, players have to buy slots for game platinum, which is purchased only for real money.
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