Do you have to Credit Unity3d?

Ok so im on PsVita typing this and before i came here i began playing this game called Escape Plan which i downloaded as a Demo

Then at the start of any other game. It showed various teams and companies that supported the devepment of this game.

Thats when i saw Unity. and was like Whuuu? this game was made by Unity3d? that’s pretty bad ass.

So ijust want to know do you have to Credit Unity3d? Like is mandetory or else they’ll fine you?

No, you definitely don’t have to. Do it if you feel like it, cause e.g. we made possible something that would otherwise not be achievable, we made you happy or made your life easier.

If you do give us a shout-out, know that it will be deeply appreciated.