Entertainment Internet

The Hardest Online Games to Play in Your Browser

Joe Keeley Updated 23-03-2020

Do you like playing a hard game every now and again? There’s a thrill in tackling a challenging game and beating it.


So, to help you get your fix, we’ve rounded up the hardest online games that you can play in your web browser.

These games all run in native tools like WebGL, meaning you don’t need to install any outdated plugins like Adobe Flash.

1. Exit84

Exit84 is a platformer with a difference. Instead of using directional keys to move your character, you instead have to type specific sequences that appear on the screen. Once you type it, your character transports there.

The game quickly ramps up in difficulty, with increasing number of enemies firing all sorts of obstacles at you. Get stretching those fingers.

2. Wave Run

Wave Run game


Wave Run is a fast-paced platformer that is all about completing the 33 trials in the fastest time possible.

The controls take some time to get used to, but that’s part of the challenge. Soon you’ll be flying over spike pits and bouncing off the walls. However, you’ll need good reaction times to avoid repeated death.

3. Singled Out

Singled Out game

Galactic super criminals are at large in Singled Out and it’s up to you to take them down amongst a crowd of innocents.


You get given three identifiable features and have a short space of time to locate and shoot the criminal. The game soon gets hard as the number of faces increase and all start looking similar. Shoot the wrong person and it’s game over.

4. Color Filler

Color Filler game

Color Filler is a grid-based puzzle game where you need to push all of the different colored boxes into their respective slots. One wrong move and you might need to start the level all over.

Color Filler starts off simple, but the difficulty quickly increases. You’ll need to fully engage your logic to get to the end of this one.


5. Pix Hop

Pix Hop game

Pix Hop may look simple, but it’s anything but. You control a bouncy white square in this endless platformer. The more you move and the more coins you collect, the higher your score.

Of course, there’s lots of enemies flying at you, plus the floor keeps dropping away randomly. Keep on bouncing!

6. Pogo Postman

Pogo Postman game


Delivering the post is tough in the wind and rain, but how about on a pogo stick? Pogo Postman puts you in that exact situation and you must contend with tricky terrain as you bounce to deliver letters.

In a nice touch, you can select a user-submitted wish to deliver before you begin, and you can submit your own too.

7. Zig Zag

Zig Zag game

Zig Zag would be calming if it wasn’t so difficult. It’s unlikely that you’re going to be able to last more than a minute or two in this game.

You control a colored line within a zigzag shape. The screen constantly rotates and you need to use the arrow keys to push the line in the right direction. However, with the orientation constantly changing, that’s no easy feat.

8. Rocketpult

Rocketpult game

Normally, rockets aren’t fired from catapults, but Rocketpult isn’t worried about logic. You must spin the catapult and then launch your rocket, using the boosters to control its trajectory.

You can enable slow motion to get more refined control, but be careful not to land in the water or run out of fuel. Bonus points are awarded for skill and style.

9. Dodge

Dodge game

Dodge is a reflex game where you control a circle with your cursor. Enemies are constantly flying at you that you must avoid, and an additional challenge comes from the constantly morphing landscape.

If you want to make Dodge even harder, hop into the settings and rack up the difficulty. You can also change the color palette; each style has its own leaderboard to keep you busy for a long time.

10. Insane

Insane game

In Insane, you control a rolling square that you must guide towards the end of the course. You can slow the square down, but be careful to avoid the traps or fall off the edge.

Insane spans 50 levels and increases in difficulty as you progress. It also has a witty sense of humor, ensuring you’ll be laughing as your square rolls off the edge for the 100th time.

11. You Have to Win the Game

You Have to Win the Game is both the name and the aim of this difficult browser platformer. This is an exploration platformer designed to look like it’s being played on a 1980s computer monitor.

The game is hard enough by default, but you can ramp it up by choosing the Extra Spicy campaign and enabling YOLO Mode which disables checkpoints and enables no respawning.

12. Streamline

Streamline game

The aim of Streamline is to grow the line so it reaches the purple square. You can control the direction, but not the distance. As such, you have to bump into other blocks and power-ups so that you don’t get trapped.

The game starts off easy, but soon gets devilishly difficult. If you manage to finish all the levels, there’s an infinite mode with procedurally generated puzzles.

13. Divine Trials

Hop into your chariot and battle some formidable opponents of the Greek civilization in Divine Trials. This is a bullet hell game, where your screen is constantly littered with bullets that you need to dodge.

You only have three lives, so you’ll need to nimbly control your chariot. Amusingly, after each boss you need to choose which gift you want to give to the gods in exchange for power.

14. He Almost Killed Me

He Almost Killed Me game

He Almost Killed me is a game that represents the difficulties creative people face when making something. Suitably, it’s also very, very hard.

It’s a 2D platformer where you control a bouncy character jumping through a stylish world. All you need to do is move and jump. Sounds easy, right? Just avoid all those spikes.

More Online Browser Games to Play

These hard online browser games are sure to keep you busy—and perhaps frustrated—for a long time. So we wish you good luck and Godspeed.

If you want to play some other browser games that are more laid back, check out the best free browser games The 17 Best Free Browser Games to Kill Time Looking for the best free browser games? If you have time to kill, here are tons of awesome free browser games you can play anywhere. Read More perfect for killing time.

Explore more about: Browser Games, Game Recommendations, Online Games.

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  1. Johan
    April 9, 2020 at 2:10 pm

    QWOP should definitely be on this list :)

  2. Worlds Hardest Game Blog
    January 23, 2010 at 9:21 am

    You can try some walkthroughs and cheats I found at this location http://the-worlds-hardest-game.blogspot.com/

  3. Jeja
    January 20, 2010 at 4:39 am

    Definitely Worlds Hardest Game. Can't pass level 10. :(

  4. ButteredRum
    January 5, 2010 at 8:39 am

    Go...fun game, makes ya think. However, you don't get to blow sh*t up! Sigh....what a world.

  5. Leisureguy
    August 29, 2009 at 12:54 pm

    The original title of the post did not include the word "online"---that was a later edition. And yes, I would say that Go (Weiqi, Baduk) is the hardest game in the world---especially since one can readily extend the board size to ramp up the level of difficulty. And since one can play Go online, perhaps it is part of the online world, but it's a strategy game, not a game based on quick reflexes.

  6. Josh
    July 24, 2009 at 5:29 pm

    which one do you find hard and why i think the world hardest game is easyest because i've oll ready completed it before mate LOL HAHAHAHAHAHAAHAHAHAHAHA

  7. Aly
    June 24, 2009 at 7:14 pm

    On snubby land i couldnt even get passed the 1st level!

  8. lololololololol
    March 23, 2009 at 5:29 am

    one of the hardest games? cave story, the hell level is hard if you dont know how to do it, not to mention you have the final boss who has like 4 phases each one being pretty hard to beat. it really depends on which weapon you pick too.

  9. Atlanta Private Investigator
    March 22, 2009 at 1:37 pm

    Wow, that's a cool list - thanks for sharing.

  10. Laura wilkinson
    March 7, 2009 at 8:37 am

    i think tis is the easiest game i have ever played and i'm only 10yrs old i'm soooooooooooooo... cool :-)

  11. Jesse C.
    February 13, 2009 at 4:44 pm

    I think Earth Defense Force on Inferno Difficulty should had been at least number 4 or 5. I spent DAYS trying to collect armor tokens to get my armor up and I still haven't even been able to get past a certain level in Hardest Difficulty.

    The sheer Huge amount of armor tokens. The power and numbers of your enemy and the fact that is the final boss make it an incredibly hard game to play when you get past hard difficulty. I have tried playing the number 1 game and I already knew it was gonna be there before I saw it.

  12. Nicolas
    February 11, 2009 at 6:07 pm

    To the firsst comment: go one of the hardests games?

  13. lmagus
    February 8, 2009 at 9:26 pm

    Mushihimesama Futari

    an arcade vertical shooting game.

    no-one, even the most hardcore have finished the game on the first life.


  14. Katana
    February 7, 2009 at 10:47 pm

    what where is contra?

    • JIM
      February 11, 2009 at 7:33 pm

      Contra... Really?
      you need to put in 500+ more hours gaming and get your skills up ;)

  15. cownaetion
    February 7, 2009 at 4:13 pm

    Any flash-based game that is not a spin off is the dumbest item to put on this list.

  16. andrewp
    February 7, 2009 at 8:53 am

    Volcano on the BBC Model B. I've never completed Level 2 and Level 1 takes less than a minute to complete.

  17. albernier
    February 7, 2009 at 5:02 am


  18. A typical loser
    February 6, 2009 at 11:03 pm

    I feel like the biggest loser on Earth, posting the Fifty Billionth comment or whatever, but I feel the need to just take this moment before I actually become one of you fucks who bothers to post a serious comment this low on the page to check myself. Man, I feel sorry for the guy after me. Also the green blob one was hard or whatever..... I've never felt the warmth of a woman.

  19. danial
    February 6, 2009 at 10:35 pm

    gata try some of these games

  20. Flying Dutchman!
    February 6, 2009 at 6:16 pm


    There is no competition.

  21. Baron
    February 6, 2009 at 3:57 pm

    Atari's Bachelorette is the hardest game ever.

  22. David
    February 6, 2009 at 2:15 pm

    The "Japanese Mario Kitten" game is actually called "Syobon Action"

  23. Kyle
    February 6, 2009 at 1:43 pm

    I wouldn't have taken this seriously if you hadn't had IWTBG as #1. I've been playing for over a year, and I just a few screens away from becoming The Guy. No game has ever made me more frustrated.

  24. krisu
    February 6, 2009 at 12:26 pm

    I have seen La Mulana Let's Play videos by DeceasedCrab, it's so long game and Hell Temple is really the hell. And puzzles are is not easy to beat. Take a look: http://www.youtube.com/user/DeceasedCrab, I recommend watch those Hell Temple videos. Also, I have seen IWBTG videos and I have to say: that game is also pain to play. I agree still to Symbiotic, it can't be a hardest game in the world, but it's hard enough.

    Also, Superman 64 is hard, buggy and annoing game.

  25. Deathdonut
    February 6, 2009 at 11:35 am

    As several have posted, try some of the roguelike games if you can get past the ansi character graphics (several have graphical versions). I recommend Nethack or Adom as the most impressive of the bunch.

  26. god
    February 6, 2009 at 10:59 am

    I would have to put forward Jumper or Jumper 2

  27. Mjolnir
    February 6, 2009 at 2:34 pm

    If it is hard free games you want, you need to take a look at Deadly Rooms of Death. That game is mind blowing hard without the element of randomness.


    Also to expand on what a free game is, take a look at Not Pron, also a free web game that is balls hard.


  28. Gif Dump
    February 6, 2009 at 6:03 am

    One Game: Bart vs the Space Mutants
    Bart vs the World

    Enuff said.

    • Doosh
      February 6, 2009 at 12:26 pm

      i 2nd that!!!

  29. spoons
    February 6, 2009 at 1:46 am

    any rougelike, adom, cthangband, nethack, they're all absurdly depthy and difficult.

  30. Ernesto Quezada
    February 6, 2009 at 6:31 am

    games-garden.com/38-Super-Strawberry-Clock.html Super Strawberry Clock is so hard for me, I always end up as a smoothie IN THE VERY FIRST LEVEL!!!
    That's embarrassing :(

    PS: please tell me I'm not the only one!

  31. Andrew
    February 5, 2009 at 10:37 pm

    It's great seeing GM games get this kind of attention, good job, Matt!

  32. Luke
    February 5, 2009 at 10:28 pm

    1)I have become the guy.(Beaten I wanna be the guy)
    2)I'm sure you're aware of this simon, but no spikes fly at you in that room. Not to say it wasn't an extremely difficult room.
    3)To show an example at how mad this game has made certain people, look up either cloud8745's or ultrajman's walkthrough of the game, and skip about 10 parts in.

  33. Polyester
    February 5, 2009 at 9:57 pm

    N-game, or ninja game, watever the fuck it was called, 500 levels of you as a ninja collecting gold and getting to the end, more gold meant more time, if your time ran out, you died. Infinite lives tho

    • johnny bravo
      February 6, 2009 at 5:49 pm

      i agree N-Game started off fun but ended in horrible falls and lasers and bombs wich was very frustrating

  34. sean murray
    February 5, 2009 at 8:33 pm

    So you've not actually heard of chess then?
    Or if we must stay in cyberland and cyberland alone, I am thinking you have so far declined to boggle yourself with a trial subscription to eve online?

  35. These are easy
    February 5, 2009 at 11:22 pm

    When you beat all of these kids games above, try something harder, like this:


  36. Symbiotic
    February 5, 2009 at 10:46 pm

    I still don't believe that "I Wanna Be The Guy" aka IWBTG is the hardest game in the world. Kaizo Mario and Kaizo Mario 2 easily take the cake, because while you nearly MUST use emulator save points to beat the game, they're still possible to beat without, if you're a video gaming god. While they aren't exactly their own separate game, they are modifications of Super Mario World for Super Nintendo, which is one of the best games in the world itself.

    You need two Super Mario World roms, one named "KaizoMario" and the other named "KaizoMario2," as well as two IPS files, one for Kaizo Mario, and one for Kaizo Mario 2, but they must be the same name as the corresponding rom files(of course, without the extension included).

    [Broken URL Removed]

  37. gus
    February 5, 2009 at 5:40 pm

    Battle Toads anyone?

    • Ragter
      August 29, 2009 at 12:41 pm

      Hardest. Games. in. the. ONLINE. world.

      What's so tough to get about that..?

  38. Ben Newman
    February 5, 2009 at 6:41 pm

    I gotta second Nethack, and not only because I've just finished my own Ajax version, big-ape.net/nethax.

  39. Leisureguy
    February 5, 2009 at 1:25 pm

    I would have nominated Go as one of the hardest games, and probably include Contract Bridge as well. The world of games extends far beyond your computer.

    • Jeremy
      February 11, 2009 at 8:18 pm

      I think the point of this post is to note crazy-hard COMPUTER games.

  40. jch
    February 5, 2009 at 3:14 pm

    hmmm - where is nethack.org. Many players spend years trying to beat it even with access to tons of spoilers.

    • Simon Slangen
      February 5, 2009 at 4:40 pm

      This nethack sounds like an interesting challenge. The first I hear from it though.

      Guess I know what'll be occupying me the coming time ^^

      • beth
        August 1, 2009 at 7:12 am

        hi i thought i heard you say the games are hard