That games you found out that are pretty cool but they're not very popular...

Monday Night Combat

Pick a Visual novel, pick any visual novel.
although out of all of these the infinity series (Never 7, Ever 17, Remember 11) could definitely use some more exposure. I prefer these to the zero escape games.

I've really enjoyed Cabela's Big Game Hunter Pro Hunts, everyone thinks this is garbage because of the Cabela's name but it's not. It's a pretty good hunting game, almost open world (4 different areas). The only problem is the save feature is broken, it doesn't work properly for many people (including me) and the game will never be patched (Cauldron now works for Bohemia on DayZ)

Special Forces: Team X
And it is a shame, because its a multiplayer game. So after pretty mediocre reception, nonone bought it and servers were desert-like afer a month. IMHO extremely fun multiplayer shooter.

Morrowind

3079 and 3089

They Bleed Pixels. It's on sale right now!

Dark Sector
Terraria

Binary Domain

The Journey Down: Chapter One

Penguins arena: Sedna's world

WazHack

Arx Fatalis - First Person RPG... pretty cool magic system (you have to draw runes by mouse to cast the spell), cooking, alchemy, lots of secret places, puzzels, good story. I really recommend it for all RPG fans.

I played LocoCycle for the first time last night. Its the most fun Ive had playing a video game in a long time

I know that it ended up disappointing a lot of people (especially since the demo was so misleading), but I loved Brutal Legend. Great voice acting, lots of great cameos, outstanding art and scenery, but some people just couldn't get over the RTS parts. Personally, I had no problems with them.

Strike Vector and Gas Guzzlers Extreme.

Deponia Trilogy.
Better than Monkey Island

Trine & Hotline Miami.

Fate of the World, Super Sanctum TD.

Mars: War Logs

Type-Rider or Shatter for example.

Risk of Rain is pretty good. Can waste many hours before knowning + Co-op

Gimbal...

10,000,000. Stealth Bastard Deluxe.

Is solar 2 popular? i liked that game but times i tell friends about it they never have heard of it.