This game has you traverse 100 increasingly difficult dungeon floors, with a boss fight every 10 floors.

Every mentionable mechanic in this game is extremely shallow, from the side-quests (of which there are only about 20), to the combat which is basically just mashing the primary attack button before your enemies have a chance to fight back, to the loot... Very little of the loot is useful and none of it is interesting. It is usually either temporary powerups, health, useless subweapons or "tokens". You can choose two tokens at the start of a dungeon run and these will add certain effects. I found myself using the token that increases speed all the time, because the character I was playing just moved far too slow which added to the already existing monotony of the gameplay.

The graphics are simple and colorful, the sprites and animations of the 2D elements are particularly impressive. The audio is also good, which is to be expected considering they got the entire voice cast in to do the dialogue. You will find that the repeated lines and unfunny one-liners will get on your nerves quickly, though. The soundtrack is awesome, as is typical with WayForward games. Again, because they are overused and spread thin, you might find they lose their appeal after hearing the same loop 50 times.

Is it Adventure Time? Yes. Does it have the weird things and the characters you love from the show? Yes. If you are a fan, you would probably find some entertainment in this game, but as a game on its own it is basically a flawed version of Dungeons of Dredmor or Recettear, both of which are far better and contain far more content, yet cost a fraction of the price. In the UK, at least, this game costs the same as Bioshock Infinite and Tomb Raider when they came out, an absolute joke. I can't recommend this game to anyone until the price drops to at least 75% off and even then I would say it's something only fans should play.

Edit:
The game is also incredibly buggy. I had not encountered any on my first complete game, but going back later to get missing achievements caused a lot of issues. For starters, the game crashes a lot. In my case, it would crash at the hub world most of the time when a specific sprite came onto the screen.

Additionally, there are achievements for completing 50 floors all in one run for the end-game content (The Nightosphere). This takes many, many hours to do and I actually had to restart it several times because the game crashed (crashed at certain bosses, also crashed when using special skills). These do not appear to have been fixed, so my suggestion is still to simply avoid this game completely.

**Just gonna make a quick edit here; it amuses me how many people complain about how this game has no online multiplayer, when it has NEVER been announced that it would have any. It says on Steam, the box of the game, and everywhere online where it was advertised, that is is -local- multiplayer. Why the heck people thought it would be online is beyond me, lol.**

This is coming from someone who practically worships Adventure Time. WayForward's two little games that they made do the series NO justice whatsoever. Hey Ice King was short, easy, and overall just as bad as the game it was a clone of, Zelda II.

Explore The Dungeon is a slow-paced, tedious rouge-lite. The floors are procedurally generated, yet still manage to all feel the same. The game itself is buggy, with enemies and background objects/lights disappearing and re-appearing at random, and some tiles glitching into eachother and giving off a static effect. Enemies and items often like to fall through walls, which can be annoying.

The characters have varying movement speeds, but even as Marceline, who is the fastest, I still feel dreadfully slow. The speed-up token, Speed Shoes, feels absolutely essential simply because without it the game feels like an even longer and slower monotonous grind than it already is.

There are only a handful of enemies, around twelve or so, and then a good four or five pallet swaps of each one. You enter the Nightosphere at one point but there isn't even anything new there; only another layer of palletswaps. They even rehash old boss fights in a lazy-as-heck effort to pad out the game! I know many games do that, but the bosses in this are story-specific events and not just super-versions of certain monsters. Susan Strong and her people have no need being in the Nightosphere; yet there they are, and you need to save them, again. Because reasons.

The only good factor about the game is the voice-acting; the original cast came in and delivered all the glorious voices we've come to love. Yet even that isn't much of a redeeming factor because of how utterly -repetitive- the lines get. I actually have to play with the game muted and my own music or videos playing in the background because the game gets so dang dry, so quickly. I'm not talking about when I grind either; I mean even just making progress through the game, only unmuting it during boss fights so you don't miss out on the actual new dialouge.

That's about it, really. The game is just a buggy, monotonous grind that is absolutely NOT fun at all to play. Even with friends, it's still just doing the same boring crap over and over, laughing awkwardly at the repetitive voice acting, trying to pretend like you're all having a good time. I get that the game is geared towards children, but even then, I can't see a child's simple mind being hooked on this game for very long. Either way, it's a game where you want to know how it ends, so you force yourself to keep playing. Then after that, you drop it and will never pick it up again because you don't want to re-experience that hell for as long as you live.

The only things we have to thank WayForward for here are a waste of time and money. Thanks guys, you made another cruddy game. *Slowclap*. I really wish Pen would stop trusting his beloved series to those goons. Shantae and Mighty Switch Force were OK, but nothing fantastic. Just simple platformers using breasts to sell themselves really. Other than that WayForward have nothing to speak for. I'm sure a small team of dedicated FANS could make a far superior game than Hey Ice King and Explore the Dungeon. Seriously, the bloody IOS games were better than these.

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I recommend this game as a reason why Valve should consider a return policy.

Sadly, WayForward trick us all. This game is extremly booring and have unpardonable poor gameplay. Yes, it is bright and yes it has Adventure Time style and even original voice cast. But except this few things - Explore the Dungeon Because I DON’T KNOW have nothing good at all.

First of all don’t trust multiplayer budges at the game store page. This game have ONLY LOCAL CO-OP, strictly tied to gamepads.

Second as soon as you complete tutorial you will get everything this game can give you. As I said: Explore the Dungeon Because I DON’T KNOW gameplay is extremely poor. This game have 100 levels of dungeon, bunch of heroes and only one way to going through it.

And last one, OMG! Look at this price! Maybe Adventure Time license is expensive, but the right price for this piece of frustration is 2.99$.

Do not get fooled by the title. This game is not worth your attention nor any of your money.

Forget everything you know about crawling up a dungeon! Adventure Time: EtDBIDK is the premiere loot-em-up by the cash-in division of Pendleton Ward who brought you such classic titles as Adventure Time: Zelda 2 on the DS and Adventure Time: Mobile IAP simulator.

This title takes all of your favorite Dungeon Crawly tropes and dumbs you in the role of Marceline, who is a bit more fun to play as, or Jake or Finn, neither of which is fun at all. Fight through I think 50 floors of pallete swaps while the charming sprites and voice work bore you away! The tropes are the very most basic. You pick up the items, you perma-die but still progress somehow, and sometimes you fight a boss. Reading that previous sentence is more action-packed than the actual game though.

While the gameplay may be the most bland and unfun thing ever, the voice acting is charming. 20-somethings who insist they are not hipsters and 8-year-olds alike will get a huge kick out of recognizing characters. "Hey that's Muscle Princess." If you love an Adventure Time cartoon program and you have to get all associated merchandise then quality has to take a back seat. What are you waiting for? Consider adding this one to your collection right away!

Has:

• A Romp
  
• Charming Pixel Arts
  
• Characters & Voices U Know & Love

Lacks:

• Quality Tunes
  
• Turret Sections
  
• Fun Factor

We give this game a NO out of 5.
-- Highlights for Kids Magazine

“3... out of 5” --Xplay "Adam Sessler"
3/10 “THIS GAME ISN'T FUN, BUT IT SURE HAS GUTS!” --Shounen Jump
5/10 “We're going out of business.” --Gamespy
24/100 “Not a single anime. No pantsu at all. I just don't get Western developers.” --Famitsu Magazine

I suppose it could get better but it starts out really weak and slow. It's like a very simplified dungeon crawler and it's just endless randomly generated dungeons. The Combat is weak and the game is unimaginative. I don't know why they can't make a good adventure time game but they haven't yet. Basically this is endless smashing increasingly annoying and difficult enemies while you drill down through dungeons that are mostly empty & boring. I will update if it picks up but so far it's dismal...

Repetitious and boring. Pretty much the opposite of the cartoon. This game doesn't really do justice to the original IP.

Very overpriced for what you get out of it.

Not worth the money. 5$ buy at best. no online co-op for a 40$ steam game is ridiculous. This is just a money grab.