The other day, when I was reading an adult book, I thought, "I can tell whose breasts they are by just looking at them. Well, am I a king of oppai?" However, there was no way to prove it.... But one day, I receive a letter and it includes a bunch of free sex tickets! Also, the reverse side of each ticket has the photo of someone's breasts. When I'm confused, a girl, Nil, appears in front of me. According to her, I'm qualified to take part in a game. It seems the tickets aren't fake. My mission is to look for a girl who's got the same breasts printed on the ticket. Like this, my search for oppai begins....

What are the best anime that deal with mind games, like Death Note?

First off, "animes" is not the plural for anime.
Japanese does not work that way.
Its just "anime", regardless of its number.
Its the same for samurai, ninja etc. Now coming back to your question, there are plenty of anime like Death Note, which deal with 'mind games'.
Here's a list : 1 .
Code Geass Code Geass offers a mind game adventure between the Rebels and Empire (similar to that of Light and L).
Along with plenty of suspense and plot twists that make you want to keep moving through the episodes (similar to that in Death Note).
Personally, I felt it was better than Death Note, especially the R2. Code Geass: Lelouch of the Rebellion (TV) 2.
Monster Monster has been praised by critics as being an intelligent anime that features excellent plot weaving along with a sophisticated storyline.
The anime does take a few episodes to really kick off, so be sure to give it the time it deserves before deciding its not the anime like Death Note for you. Monster (TV) - Anime News Network:AU 3.
Ergo Proxy Ergo Proxy offers a great battle of wits making it a great choice if you are after an anime similar to Death Note.
Ergo Proxy offers a dark scientific setting filled with mystery and philosophical undertones. Ergo Proxy (TV) - Anime News Network:AU 4.
Zombie Loan Zombie Loan has a large focus on Shinigami (death gods) and will feel very familiar to fans of Death Note.
Unfortunately the anime only has a total of 13 episodes but does have a full Manga series if you fall in love with the anime. Zombie-Loan (TV) 5.
Shiki Both Death Note and Shiki examine the psychology behind murders and both contain an incredibly dark atmosphere.
Just like Death Note the anime series presents viewers with a grey and grey style of mortality that will have you questioning which side is right and wrong.
If you are looking for a great anime like Death Note the psychological thriller journey that Shiki offers will not disappoint. Shiki (TV) - Anime News Network:AU