When I was a small kid, maybe 9 years old, an older person offered me to install a software on my phone. With this software I could do free in-games purchases, which otherwise cost money. Do I have to return any of these money to the game-developers or is that the responsibility of the person who installed the software? Please note that these games contained music and may be haram themselves
Wa’alaykum as Salam wa rahmatullahi wa barakatuhu,
The older should pay for these games. Even though they might have Haram elements, you still took the benefit from these games.