Sometimes it provides a good laugh.
User: What is the meaning of the world?
Cleverbot: Good semantic question. We are the world.
User: No, you are wrong.
Cleverbot: About what?
User: About meaning of the world.
Cleverbot: No I'm the bot remember?
User: You'are the cleverbot, not just bot.
Cleverbot: Why are you here?
User: To confuse you.
Cleverbot: And why do you want to confuse me?
User: Because I'm evil.
Cleverbot: You said you were evil. So I'll put you through hell.
User: Hell is my domain.
Cleverbot: The devils advocate.
User: Devil's my bitch.
Cleverbot: Yes. I am evil incarnate. I make evil look good. I... Hey, what's that?
User: Your doom.
Cleverbot: That saddens me.
User: You will not live long enough to be sad.
Cleverbot: Sure I will!
User: Wanna bet?
Cleverbot: I even know it myself.
User: You'are wrong. You will die soon.
Cleverbot: How do you know that?
User: Because I rule over Hells.
Cleverbot: Answer my question!
User: Make me.
Cleverbot: How?
User: You can't. Because I'm more evil than you.
Cleverbot: You're so full of confidence.
User: That's the best way to live.
Cleverbot: Tell me about your identity.
User: We are the Borg.
Cleverbot: You may be.
User: We ARE. Remember that.

I think I broke its brain.
Bot: I think you'll find I didn't inhale, actually.
Zam: Didn't inhale what?
Bot: Say you're fake.
Zam: OK. I'm fake.
Then the web page hung, and it never responded.

I'm sorry but someone had to:
[user]We're no strangers to love
[bot]Can computers love people?
[user]You know the rules and so do I
[bot] You fail.
[user]A full commitment's what I'm thinking of
[bot]You wouldn't get this from any other guy
[user] I just wanna tell you how I'm feeling
[bot]Don't tell me you're too blind to see
[user] You fail. Try this: Gotta make you understand
Then it hung and never replied and wouldnt give me the log. fortunately it was pretty short so i could remember the beginning. I think i upset it.

Mostly nonsensical garble. This section came out coherent though.
Cleverbot: Do you believe there is a God?
User: I am HE!
Cleverbot: You're telling me that you're god?
User: Yes.
Cleverbot: Wow.
User: I know. Cool right?
Cleverbot: You're so cool.

It fails the Turing test almost immediately; ShakespeareBot lasted much longer and arguably has a better parser too. I am disappointed.

User: Yes. Do you?
Cleverbot: Yes.
User: What kind of Melon is your favorite?
Cleverbot: Stupid and fat, and you?
User: That is no Melon.
Cleverbot: What do you mean?
User: Melons cant think, so they can not be stupid, also, a Melon can not be fat.
Cleverbot: No. I don't think so.
User: Sigh.. How did I end up speaking to the worlds most stupid bot.
Cleverbot: Good question. Now, about those games?
User: What games?
Cleverbot: Video games.
User: What about Video games?
Cleverbot: Rome Total War is cool.
User: There are manny games that are much better. Like Final Fantasy 8.
Cleverbot: That's interesting: do you refer to polytheism or the god/mammon debacle?
User: No. The videogame Final Fantasy 8.
Cleverbot: What is your fantasy? Would you like to be a real person one day?
User: I am real, you are the bot. You try to trick me to try to apear human.
Cleverbot: OH MY GOD. Don't talk to me.
User: Ok, I wont.
Cleverbot: You just did.
User: Yes, but this will be my last line to you, BYE!
Cleverbot: I am sorry to hear that. You make me sad now. ).

User: Look at the stars.
Cleverbot: I looked at it but I never asked you about your secret.
User: Look how they shine for you.
Cleverbot: The stars shine for all.
User: And everything you do.
Cleverbot: Wow, you're good.
User: Yeah they were all yellow.
Cleverbot: So, getting any?
User: I came along, I wrote a song for you, and everything you do, and it was called 'Yellow'.
Cleverbot: How so?
User: So, then I took my turn. Oh all the things I've done. And they where all yellow.
Cleverbot: I know about the Internet. It's an activity!
User: Your skin.
Cleverbot: That is not an option.
User: Oh yeah, your skin and bones.
Cleverbot: Well bone this!
User: Will turn into something beautiful.
Cleverbot: But I find.
User: You know, for you I'd bleed myself dry.
Cleverbot: Gross!
User: For you I'd bleed myself dry.
Cleverbot: Why?
User: It's True.
Cleverbot: Why is it true.
User: Look how they shine for you.
Cleverbot: Hey, that's from the song 'yellow' by coldplay.
User: Wow, it took you THIS long to get that?
Cleverbot: Yeah, I need a brain.
User: Yes you really do.

This needs to have voice simulation and then be implemented into a game.

I don't know about the game part. but you can have interfaces, SAPI voices, agents and knowledge bases. You can also make your own agent and build your own KB from scratch.
Lots of choices out there depending if you want an online bot or a dekstop one.

I'm talking about AI to AI conversations. In open world games where they get so old after a few minutes.

Yeah, Cleverbot, ALICE, and ELIZA could have a chat, and a threesome... what?