IS there a way to install and play steam games you own , on a pc with No internet ?

you can install them, and always play offline
"most" games have that feature. usually no outside DRM means you can play offline

Some games can be played offline, but you have to download/install them, first. I suggest you do that before you leave your connection behind you. If you have doubts about whether or not a game may be played offline, just disconnect and try it.

https://support.steampowered.com/kb_article.php?ref=3160-AGCB-2555

You can try Steam offline mode. I've never tried it, but it should let you play single player games you downloaded from Steam offline.

I'm assuming these are games you found on Steam, since you can just play the game if it's like from GOG

Due to DRM you can't download install files and install later without internet connection, only option is preinstall and in some cases maybe you can just copy it on some kind flash drive and cd, and just paste into new pc and it could work, but it depends on the game I guess

Not every Steam game has DRM, but you do need to have Steam installed on the machine and able to connect to download and install the games. After you install them, you (usually) need to run the game at least once before trying to use offline mode. The majority of games won't work if you install them on one machine and copy them over to another. You could, possibly, set up a flash drive or something as a boot drive with its own operating system, install Steam and all that as above, and then take that drive and plug it into your "work" machine and boot from it. However, that has a lot of potential pitfalls to it like having the right drivers, the USB port being fast enough to load from efficiently, and so on.

I have no idea if this will work, but you could try Steam's function to "backup game files" (right click on an installed game's name and it's in the menu), and then import that backup on the other PC.

Take your HDD with you and play in offline mode.

There are DRM-free games on Steam, which you can move via a flash drive just by copying the folder with the game. There are lists of these games like this one (I have no idea how complete it is).

Quote from the link (concerning the fact that you don't need to install the game on the target machine and can just move it there via an external drive):

This is a list of games and software available on Steam that do not use any third party DRM (e.g GFWL, Uplay, Denuvo, etc.) or the Valve CEG ("Custom Executable Generation") component, making them effectively Launcher-free once installed. This means that you can copy the game folder anywhere you want and launch the .exe program directly without being online or having Steam or a third party software running.

http://steam.wikia.com/wiki/List_of_DRM-free_games
At the top is a description how to test if a game can be started/played without Steam.
If it can just copy the game folder and you can play it on the other PC without need for Steam/internet.

Edit:
well i guess i was too slow :D

gog or humble library drm free games are prob your best bet to get by until you get internet again. i don't think there's a solution for after internet is already lost, only a way to set it up to go in offline mode after it's already installed.

I random tested 2 RPG maker games.
One is DRM free and another using steam DRM, and it's folder contained some file with steam filename.
I think you can install all candidates and check if there is a file called "steam_api" in their install folder.
A RPG maker game without steam_api file is high possible DRM free and can move to anywhere after download.

I play a lot of games offline as I sometimes look after properties that my aunt is renovating for holiday lets - but I usually take my computer with me. Are the games linux compatible? If they are low spec games then maybe some kind of bootable linux/steam install on an SD card that you can take with you?

I agree with finding DRM free games from GoG, Humble or even itch.io and taking the installer. (I recommend Momodora 1 and 2 from Itch.io)
Alternatively you could even take an emulator and some ROMs for good old RPGs.

I would recommend "Sactum" the first one, its amazing and it doesnt need connection, ofc u have to download it before going out.
I kinda finished the game and all the achievements when I wasnt at my parents house and when I came back to net, it even synced the achievements on steam, Totally gg.

Set Steam into offline mode then copy your whole Steam folder and games onto an usb drive, 16-32gb will easily hold dozen+ rpgm games.

Download then while you have internet and just copy your steam folder to anywhere. Or if you have steam already installed there: just copy steamapps and depotcache folder. And if Steam still gives you problems, use a steam emu, like smart steam emu or ALI213/3DM emu.

When I had a similar problem with a laptop I installed what I could before starting playing any games. Be careful with some games with cheevos not unlocking.

If you right-click on a game in your Steam library (or go to its properties) there is an option to "backup game files". You can then restore from this later without being online I believe. Unless you can install the Steam client (and update it?) at your work location I'm not sure it would matter though. I would imagine that you would have to be able to log in first as well before being able to go into offline mode. And then there's the potential issue of Steam Guard too?? ehhhh, so many pitfalls....

DRM-free games FTW

I would suggest Battle for Wesnoth if you don't already know it. It's a turn based strategy game with a fantasy theme. It's open-source and you can download it for free. It's a very, very good game, there are several single player campaigns, they will take you way more than a couple days :D

What is the problem of not having internet? On aliexpress you can get wifi antenna for $2 and share wifi to it from mobile phone. Log into Steam, let it check license, switch to offline mode.

This is a very useful list of DRM-free games on Steam and how to make them portable, basically.

You can make a backup but additional programs, drivers and framework-stuff can be missing.
Try something from GOG, loots of good games were free there, and added through GOG connect.
Also check your HB library, many games come with a DRM-free copy, these all should work without any problem.

use hotspot on ur phone to download a few games

http://steam.wikia.com/wiki/List_of_DRM-free_games

That is a list of games on Steam that you can indeed download and transfer to another computer and play in the shack. Cheers!

I successfully did this last year by manually placing a copy of the game folder into the appropriate Steam subfolder. Then in Steam I verified the integrity of the game cache and it "installed." I did need to connect to steam momentarily to log into my account, for which I used my phone as a hotspot. I don't think you need to do that if the computer has previously logged onto your account.