Point-and-Click Games on Steam

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Secret Of Monkey Island?

Syberia, Syberia 2 and the Broken Sword Trilogy are a good place to start

The Walking Dead

Indiana Jones and the Fate of Atlantis.

there's an old thread like this but I'm gonna suggest "yesterday" . Kinda expensive but the story is good and quite intriguing

Gemini Rue

Nobody's mentioned broken sword?

Resonance?

How's Monkey Island? steam page

Indiana Jones: The Fate of Atlantis

The Longest Journey & Dreamfall

Gemini Rue

You might want to have a look at the Space Quest Collection too. Store page

King's Quest Collection would be great. I had such a great time playing them when they were new :D

LucasArts adventure pack, Monkey Island 1&2 (my favourite game series) and the longest journey would likely be your best choices.

The longest Journey is a nice one.

Magic the gathering?

Port Royale?

• Amanita design
• Daedalic Entertainment
• LucasArts
• Telltale games
• Wadjet eye games

That's what I can recommend so far. If he wants the retro ones, LucasArts, Wadjet and (some) Telltale games should be his main options ;)

Like the Command and Conquer series? o.O

Broken Sword, Monkey Island, Runaway, Machinarium and a lot more...

Still Life isn't old as LucasArts adventures but it is a good old game. If you have floppy/cd version of any old adventure that didn't work with modern pc there is a virtual machine (scummVM) for old adventure games.

Check Desura too. There are plenty of titles.

Monkey island 1+2 - these are 2 of my all time favourite games! The 3rd one is stil good, but the 4th feels like it is milking the series (3 +4 were made by a different team to 1+2)
Tales of Monkey Island - nothing to do with lucasarts, apparently they are very good!
Broken Sword series - 1 and 2 are some of my favourite games. 3 is still good, i havnt played 4 yet.
Indiana Jones and the fate of atlantis - another of my favourite games.
Indiana Jones and the last crusade - the predecessor to fate of atlantis
The Dig - ive played this a few times and it definitely feels like a good classic, but i have never got to the end.
Sam & Max series or the original if you can find it. Amazing!
Gemini Rue - i own it, but never played
Syberia - own it, but not played yet

Grim Fandango - Apparently amazing, but ive never been able to make my CD version work :(
Day of the Tenticle - a classic of the genre
Flight of the Amazon Queen - an older one i have never played, but have heard lots of good things about

try GOG for lots of older games
Beneeth a Steel Sky - free from GOG, and a classic!

You could always wait for the new Double Fine adventure game. Being made by a team involving Ron Gilbert (the mastermind behind monkey island 1+2 and day of the tenticle)

A lot of these games outside steam might need ScummVM to work

Jolly Rover is my favorite.

the walking dead?

back to the future?

sam and max series?