Video games can be great fun and consume hours and hours of your life if they're good enough, but some are either so dull or so infuriatingly hard that they just don't get finished.
Here we look at a few that may have started off okay but very few committed to completing.
Battletoads was awesome. An unashamed rip-off/spoof of the Teenage Mutant Ninja Turtles and with one of the best titles around it was great fun until you reached level 3.
It was an infuriating puzzle about...well, we don't know what as we never solved it. Darn toads! The added frustration of the game mechanic that meant you could punch your own teammate and vice versa meant that you had to consider your placement very careful as well.
2. Takeshi's Challenge
A Japanese game on the NES, this game so so overly complex with little to no instruction that people quite often just didn't get very far with its seemingly random mechanics.
With gameplay largely based on trial and error and sections like the part where you have to sing karaoke into the second controller (without being told to), no wonder most people didn't get very far with it.
3. Super Meatboy
Released in 2010, this quirky platformer was a deliberate throwback to yesteryear when games used to hate the player and not help them out. Older gamers fell for it and may have even got further than younger ones, but in the end, even they remembered why they used to quit games so often.
But it is for this very reason that gamers loved it as it represented a true challenge in gaming once again. That being said, according to Steam's Global Gameplay Stats for the PC version, a measly two percent of players have achieved 100 percent completion on it.
4. Friday The 13th
Super Meat Boy was a beautifully crafted piece of deliberately testing gaming, but for every Super Meat Boy, there is a Friday The 13th. So badly made was this game that the clunky, pointless mechanics would be enough to drive anyone insane with no payoff of enjoyment to go with the grinding away at it.
As such, if you did ever finish it, it was because you literally had nothing better to do. Another NES game, it will be remade this year, and hopes are high that it will be much, much better.
5. Teenage Mutant Ninja Turtles
The video game tie-in to the absolutely massive 90s franchise, this side-scrolling beat 'em up was the cream of the crop when it came to challenging gameplay in a simple format.
Unlike others on this list, many will cherish this game despite probably never finishing it and sequels, and later iterations didn't improve the ease of which you could finish them yet still held so much childhood joy for us.
6. Do Not Believe His Lies
A mobile game that was released in 2014 that involves tauntingly hard riddles and puzzles. It really stretches the mind and tests your limits but sometimes you just want to switch off, and when you do, the likelihood of you coming back crashes down.
An interesting aspect to it is that communities have been created to crowdsource answers and so there is an interesting, almost multiplayer, aspect to it, and that's part of its infuriating appeal.
7. Ghosts 'N Goblins
This game brought together challenging gameplay and limited technology to make completion so unlikely that we wonder if anyone truly did it or just said they did. Having to battle your way through hordes of demons to save a princess, there was no way to save the game and no cheat codes to skip levels.
If you did beat the game, you then had to acquire the cross weapon and play through it again to get to battle Satan and complete the game fully. Few people ever bothered with a second full playthrough after struggling through the first.
8. Radiant Silvergun
On the surface, this game was a standard vertical shooter where you pilot a spaceship through a field of descending enemies. Easy enough, surely? Well, this game gained cult acclaim for not letting you pick up more weapons throughout the gaming but providing you with 7 different alternatives from the start which each had very specific uses and to get it right meant either memorizing each of the levels or having amazing split-second reflexes.
It wasn't enough to be just good at dodging opponents, and it was a genuinely real challenge.
The spiritual sequel to Radiant Silvergun, this game kept the core elements of its predecessor but simplified the concept further.
As enemies either fired light or dark lasers, you had to switch your energy shield to correspond with each weapon and, when you absorbed enough of the energy, you could fire back, but reactions had to be really on point.
10. Ninja Gaiden
This simple story of a betrayed ninja out for vengeance was so infuriatingly hard, mostly because of the game mechanic of whenever you would get hit, you would fly backward a few feet, usually off of a platform or cliff edge you'd just jumped on.
The amount of enemies on screen at any one time was quite astounding at some points and the fact that these respawned rather than stayed dead all made it super unlikely you'd ever get to the end. If you did, you then had to defeat 3 bosses in a row without dying. It was probably easier to train as an actual ninja than complete this game.
11. F-Zero GX
The follow-up to the iconic F-Zero X, this game had great graphics for the time, an awesome soundtrack that complimented the sci-fi setting perfectly and super hard gameplay as you raced around tracks at such high speeds that you'd often have to memorize tracks and how each individual vehicle would react to the cornering as reactions weren't simply enough.
Even if you could remember what you were supposed to be doing, you had to be near flawless to complete the game, and its intensity of challenge as well as superb design made it something of a minor classic.