What is NaClBox?

We host a lot of classic DOS games, demos and applications. If you used a computer in the 1990s, you will probably find something on this site that will trigger some nostalgia. We also allow you to host your commercial DOS games on our servers and play them wherever you'd like.

What is My NaClBox?

My NaClBox is a service that we run that allows you to take your DOS games and upload them to our servers. Once they are here, you can play them from any computer with Chrome installed (and Native Client enabled).

We provide hosted disk space that is like a virtual DOS hard drive in the cloud. Anything you do on that machine is saved to our servers and is available to you from anywhere.

You can create as many of these 'hard drives' (or 'games') as you want, restricted only by the relevant plan storage limits.

See the My NaClBox page for more details.

What are the system requirements?

NaClBox requires a computer that runs Google Chrome and supports Google's Native Client technology. Native client must be enabled on the computer (see the about page for more details).

We have tested NaClBox on both 32 bit and 64 bit Linux, Mac OS X and Windows 7.

What kinds of games work on NaClBox?

Most DOS games will work with NaClBox. NaClBox uses a port of DOSBox for Google's Chrome web browser. DOSBox 'emulates' the old DOS machines that ran these old games. Emulation does have some overhead and games that are very processor intensive tend not to work as well.

A good rule of thumb would be that 3rd person 3D DOS shooters (like Quake and Duke Nukem 3D) are a poor fit, but almost all other DOS games (2d action games, adventure games, etc) work great.

How do I run the games full screen?

Hit alt-enter when you are in the game to go full screen, then click on the screen to lock your mouse.

Who are you guys?

NaClBox was started by Robert Isaacs in May of 2011. Since then the site has expanded to host more free games and to allow you to host your own games if you'd like.

How do we contact you?

Please email us at support@naclbox.com or our contact us page if you have any questions or problems with the site.

Where is the source code?

The source code for 'My NaClBox' and the NaClBox public site DOSBox executable are identical. The newest differences between NaClBox and DOSBox are available here
Copyright 2020 Robert Isaacs