Pay2GetAnywhereAnytimeSoon mobile game with energy and constant "buy me!!!1!" reminders.
If you can, play this with a touch screen - the mobile background shows.

You have 72 energy maximum, refilling at about 100 seconds per point, and one try at a level costs 12 energy - do the math how time you will spend playing and how much time is waiting (or paying!!)
But since I'm in the generous mood:
with 72 energy, you can play (( 72 / 12 )) = 6 times before you're out of energy
a level has a time limit of about 3 minutes. --> you can play about 6*3 = 18 minutes per session, then you wait until your energy recharges: 12 * 100s = 1200s = 20 minutes

But above all, how serious can you take a game that includes a spelling error right onto the cover of its store page and into the game itself?
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Addendum: if you know CheatEngine or any debugger, you can play around a bit, give you effectively limitless free gems and then go wild in the shop.

Pay2GetAnywhereAnytimeSoon mobile game with energy and constant "buy me!!!1!" reminders. If you can, play this with a touch screen - the mobile background shows. You have 72 energy maximum, refilling at about 100 seconds per point, and one try at a level costs 12 energy - do the math how time you will spend playing and how much time is waiting (or paying!!) But since I'm in the generous mood: with 72 energy, you can play (( 72 / 12 )) = 6 times before you're out of energy a level has a time limit of about 3 minutes. --> you can play about 6*3 = 18 minutes per session, then you wait until your energy recharges: 12 * 100s = 1200s = 20 minutes But above all, how serious can you take a game that includes a spelling error right onto the cover of its store page and into the game itself? --- Addendum: if you know CheatEngine or any debugger, you can play around a bit, give you effectively limitless free gems and then go wild in the shop.