I have a few things to say about the game so I'll do a Pros vs Cons list first.Pros
Pretty tight controls
Easy to pick up, difficult to master
Simple (read effective) graphics
Good sound designCons
A bit pricey (related directly to above con)
Maybe lacking a few features
Now I consider myself to be a veteran when it comes to platforming games like this. I have completed n, Meat Boy, Super Meat Boy, I wanna Be The Guy/Boshy all in their entirety, as well as a slew of other action platformer games. And I easily consider 10 Second Ninja to be up there as one of my favorites. It's a game with a realtively simple concept: Kill all robots on the map using either a close range sword or long range shuriken projectiles, all without dieing in as little time as possible. Easy enough to understand, but the level the game is played at makes it a deceptively difficult. The timing for a lot of the levels requires near perfect jumps and accuracy to get 3 star ratings on, and posting higher leaderboard scores requires near pixel perfect
accuracy and timing. There is a real challenge here hidden behind the easy to understand controls and mechanics. If you enjoy a good challenge in your platformers, don't skip this game. While not masochistic by any means, any self-respecting action platformer fan needs this game under their belt.
Now the controls for this game are also pretty good, with great response time. My only gripe with some of the controls comes from slight issues like corner bumping. Landing too far off the edge on the corner will not let you stand on the ledge, however a second mid-air jump can still be performed after falling off even if both jumps were used prior to landing, meaning the game registers that you have hit the ground already. In a game where pixel perfect accuracy comes into play, this might get a tad annoying on some levels, though it is a bit difficult to notice. It can also be difficult to gauge throwing shurikens along the ground as the hitbox for it is a bit strange. This is really a non issue, but sometimes a shuriken will hit the wall at a corner, and other times it will slide across the ground as you wanted it to. I say it is a non issue because honestly, it comes down to how precise you are when throwing it in the first place, so it becomes more of an issue of when you throw it
rather than the game registering the hitbox badly. So in reality, its just a small visual gripe rather than an actual game issue. Otherwise, the controls are incredibly responsive and tight. A real pleasure to play as the game feels like its actually listening to what you tell it to do.
The sound design, while not much to note, is effective and aestheticly pleasing. No over the top speaker destroying sound bytes, just simple, effective sound design. Love it.
Now I listed 3 cons, however this boils down to really just one, and perhaps more of a reccomendation for future development. My only real con with this game is the current $10 price tag, for a pretty short game that can be completed in one sitting. No end game content, no unlockables, which means the only thing keeping you playing the game after beating the final level is getting better personal times, and ranking up on leaderboards. And with the few levels provided, should be quite a bit of replayability, though I would still say the game lacks girth. However, this issue would be remedied entirely by a user level repository, and obviously the ability to make your own levels. Now do I think the price tag is too steep? Not at all. I have payed more for less before, and given how awesome this game is, it is well worth it. More of a passing thought rather than a real issue to be fair.
As for any lacking features, it really boils down to adding in a level builder for users (Steam workshop integration would be awesome, a la Battleblock Theatre) and possibly adding in individual level leaderboards, though I could see how that would just be more confusing given that times come down to differences in 100th of a second resulting in long lists of the exact same time on down the leaderboard.
So in conclusion to my lengthy review of a rather short and simple game, I would absolutely reccomend the game to anyone, completley ignoring any small cons I might have found. Action platformer fans, if you don't already have it, get it. The games length and price is no excuse to not take part in the robo-nazi slaughterfest by the hands of a twitchy ninja. You are the only hope little man, save us from those Evil mecha-nazis. I heard they hate kittens!