Limbus Company

Premium currency

You do not pay in euros, you pay in gems, so you lose track of the real cost.

Evidence: Wikipedia (es): «​ El juego incluye mecánicas gacha, lo que permite realizar microtransacciones para obtener Lunacy o boletos, los cuales se pueden usar para adquirir nuevos Pecadores o sus versiones avanzadas conocid» · Wikipedia (en): «The game has gacha elements, making it possible to spend real money to acquire Lunacy (the in-game currency) or tickets used to acquire Sinner Identities or their respective Extermination of Geometric»

Paid loot boxes

You pay without knowing what you get. The good stuff is rare, so you pay again and again.

Evidence: 21 reseñas con contenido lo explican: «if you are looking for a good story, this is your game, and dont worry about the other two games (library of ruina and lobotomy corporation) you wont need them at all to understand» · Wikipedia (es): «​ El juego incluye mecánicas gacha, lo que permite realizar microtransacciones para obtener Lunacy o boletos, los cuales se pueden usar para adquirir nuevos Pecadores o sus versiones avanzadas conocid» · Wikipedia (en): «Limbus Company is an indie gacha management and action role-playing video game for Microsoft Windows and mobile devices using iOS or Android, developed and published by South Korean studio Project Moo»

Expiring battle pass

You buy a pass and have weeks to use it. Play too little and you lose what you paid for.

Evidence: Wikipedia (en): «Alternatively "Extraction Tickets" can be used, which can be obtained from the battle pass and various events.»