It is quite good, not without faults but a fun game.

Still missing volume control. The battle system is fine, I just want my volume control!

I can't open it, it wants to open as a "rar file but adobe reader can't read it

#3 (argh): RAR is an archive format. Go get 7-zip (www.7-zip.org) to open and extract its contents.

Bonesaw is ready?

This game is just awaesome. I am always amazed when such quality games are released for free. The graphics are nic,e the music rocks, the level design is good (especialy boos fights) and there are tons of levels.

I'm thrilled!

i love this game.
it is the best freeware platformer since the N game in my opinion

If your game has pretty bad gameplay, and OK graphics, make it crazy hard for instant internet fame. It works every time.

Examples?

I want to be that guy: http://kayin.pyoko.org/iwbtg/

insanely hard, insanely broken.

That is a terrible example. There's absolutely NOTHING broken about IWBTG. It SETS OUT to be difficult. Everything in the game is supposed to happen.

I think it's a complete fallacy that people make their games hard to cover up bad gameplay; it's far more likely that bad game designers / programmers are both unable to iron out bugs in their games and are crap at balancing.

The hit-box collision bug in Bonesaw is seriously annoying. The game itself isn't particularly difficult at all, and it's pretty forgiving with lives and restarts etc.

wow I can't believe there are people on the internet who don't know what a rar file is

How come most of these indy platformers completely lack volume control?

La Mulana and Cave Story were also pretty hard games and they are still enjoyable if you give them the time.

Cave Story? Hard? Did we play the same game? I mean, the final boss was pretty challenging and it's definitely insane if you try to play the secret level, but it's not that difficult overall.

The original Super Mario Bros still stands as my golden standard of "hard".

@James
If you like hard platformers, try Hurrican if you get the chance (it is also freeware). It took my friend and I several months of lunch breaks to clear it in co-op mode, and I can clear SMB1 fairly easily. The thing that makes it so good is that it is fair, I almost never found myself thinking "this is just cheap!". If I died (which was often), it was my own fault. We had to redo some levels several times just so we'd have enough lives left to be able to explore the next level.

this is a nice game. i found a glitch: when you skip the beginning cutscene the music will sometimes fail to stop. you then have overlapping background themes...

GAH. I loved this game until I quit, then loaded. It put me back BEFORE the first boss, but it took all of my meticulously saved Bonesaw that I had when I fought him the first time, so I'm pretty much totally boned (if you'll excuse the pun).

I've got you in here for 3 minutes. 3 MINUTES OF PAIN

I keep dieing AFTER I kill the second boss. First time I had one health left. Second time I had like 60. Any help?

It lags too much for me. The framerate is around 12FPS and sometimes jumps to 30FPS for a few seconds before dropping again. It looked great, but that framerate makes it frustrating.

As for Cave Story, I finished that before it was translated to English. It cannot be too hard if you can finish a game with so many textual clues without understanding the language.

On the contrary; that just shows how good of a design Cave Story truly was. Difficulty has nothing to do with it.

I can't get it to play, when I hit the play button the launcher windows just closes and nothing happens

This is a decent game, however, just like Cave Story borrowed elements from Metroid, this game borrows elements from Kirby. Which is not a bad thing, but still, why is The Underside called a Cave Story ripoff and bashed, but a game that copy's Kirby not bashed? I mean, it seems like a double standard, when you think about it.