Here are two more to add to my surprisingly long list above:


<span class="bold">Chip's Challenge</span> - Trailer

The quintessential freebie game on Windows 3.1 computers is a fun yet challenging puzzle game that is still fun to play today.


<span class="bold">Chip's Challenge 2</span> - Trailer

The long-dormant sequel to the original classic is finally getting a new lease on life this May on Steam. Let's bring it here, too!

Mini Metro is a minimalistic subway construction game where you make station and conect them but since the city is constantly growing you have to adapt the lines so that your sub system keeps operating until it comes to a hold and game ends.

Gameplay video: https://www.youtube.com/watch?v=KRnUQVPRiiE

Dev site: http://dinopoloclub.com/minimetro/

Vote here: http://www.gog.com/wishlist/games/mini_metro

Weekend bump with some ~199-299 voted games. :)

http://www.gog.com/wishlist/games/grim_dawn
https://www.youtube.com/results?search_query=grim+dawn

http://www.gog.com/wishlist/games/venetica
https://www.youtube.com/results?search_query=venetica

http://www.gog.com/wishlist/games/mighty_no_9
https://www.youtube.com/results?search_query=Mighty+No.+9

http://www.gog.com/wishlist/games/armikrog
https://www.youtube.com/results?search_query=Armikrog.

http://www.gog.com/wishlist/games/endless_space
https://www.youtube.com/results?search_query=endless_space

http://www.gog.com/wishlist/games/frozen_synapse
https://www.youtube.com/results?search_query=Frozen+Synapse

http://www.gog.com/wishlist/games/axiom_verge
https://www.youtube.com/results?search_query=axiom+verge

http://www.gog.com/wishlist/games/sword_coast_legends
https://www.youtube.com/results?q=sword+coast+legends

http://www.gog.com/wishlist/games/shank
https://www.youtube.com/results?search_query=shank+game

http://www.gog.com/wishlist/games/frontiers_explore_discover_survive
https://www.youtube.com/results?search_query=frontiers+game

http://www.gog.com/wishlist/games/orcs_must_die
https://www.youtube.com/results?search_query=orcs+must+die

http://www.gog.com/wishlist/games/zeno_clash
https://www.youtube.com/results?search_query=Zeno+Clash

http://www.gog.com/wishlist/games/seven_dragon_saga
https://www.google.com/?gws_rd=ssl#safe=off&amp;q=Seven+Dragon+Saga

Bringing special attention to Jetpack 2 for BillyMays (RIP in rip)
http://www.gog.com/wishlist/games/jetpack_2
https://www.youtube.com/watch?v=9BTTUv2gesI

Machines

Release year: 1999
Genre: RTS (with option to directly control any unit in first-person mode)
Developer: Charybdis Ltd.
Publisher: Acclaim Entertainment

+Nice graphics and a fairly unique art style
+Cool soundtrack
+Some unique/uncommon gameplay features (first-person mode, ability to steal research and resources from enemy structures, salvaging destroyed units and buildings)
+Widescreen support

-AI pathfinding can be a bit sluggish
-Some low-resolution terrain textures

Compatibility is getting worse with newer hardware and operating systems - the game won't install on Windows 7 (can still be played by installing on XP or older, then copying over the install folder) and apparently has major issues running at all on Windows 8 and newer.
Some GPUs encounter severe graphical issues. Performance is inconsistent on others.
The way Windows 7 handles CD audio seems to result in the music and sound effect volume levels being tied together - using the volume slider for either affects both.

Links:
Archive of the original official website (has feature list, game backstory, screenshots)
, a recently resurrected fan community site - possibly the only active one left ([url=http://steamcommunity.com/groups/wiredforwar]WiredForWar Steam Group, WiredForWar.org old forum archive)
Eden4, a fansite (last updated 1999)
machinesthegame.co.uk, a fansite (?)

Screenshots:
Standard RTS view in a skirmish game
First-person battle
Nice lighting, day/night cycle
Distant buildings
First-person view inside a research lab

MissionForce: Cyberstorm

TBS with mechs, a true classic.

More info:
http://www.mobygames.com/game/missionforce-cyberstorm


Edit: looks like there is one wishlist with more than 300 votes though, just found it here:
http://www.gog.com/wishlist/games/missionforce_cyberstorm

All the MetalTech games should be here, in my opinion. Cyberstorm and Earthsiege both. Might have to do with whoever has the Starsiege licenses, though.

http://www.gog.com/forum/general/games_that_are_unofficially_confirmed_for_release_in_the_future_part_2/post1563

:)

PAMELA. It looks like Alien Isolation set on the Citadel. It's set for next year, so theres always the chance it will never come out, but the concept alone has me sold.

https://www.youtube.com/watch?v=VAzTKDslDDM

Strike series

Fly around with a helicopter on an isometric map and destroy everything. Even if you're not into arcade shooters this is fun as hell. Simple controls, no BS.


Desert Strike: Return to the Gulf

Jungle Strike

Urban Strike

Soviet Strike

Nuclear Strike

Firefight: http://www.gog.com/wishlist/games/fire_fight

I had this game on my first gaming PC, one of my favorite top-down shooters of the DOS-gaming era, some sites list it as abandonware though, but I think that's a grey zone and would prefer to have it here and 100% legal.

Hi-Octane: http://www.gog.com/wishlist/games/hioctane (this already has a bit more than 300 votes, but is one of my faves ;) )

A Bullfrog classic, I got it when I was looking for a game similar to Wipeout XL (which ran like cr*ap on my machine because I didn't had a 3D-accelerator at that time, I had a Trident 9440 PCI 1MB), it lacks content, but still a good game.

And an awesome third person shooter:

Outwars http://www.gog.com/wishlist/games/outwars

Running at minimum with my 9440 PCI, it looked so good for that card, was unbelievable.

Skyward Collapse is a god game made by Arcen games. As usual with Arcen the game has a twist. You control the development of nations fighting to eliminate each other but your goal is not their victory over themselves but upholding the balance of power between them as long as possible.

Dev site: http://arcengames.com/skyward-collapse/

Youtube gameplay: https://www.youtube.com/watch?v=CX3fFEJaZd4
Game trailer (with actual gameplay): https://www.youtube.com/watch?v=xtm4MUFpPAs

Vote here: http://www.gog.com/wishlist/games/skyward_collapse

Jon Schaefer's At The gates is an upcoming civilization like game where you play as a barbarian tribe in the time of the downfall of the Roman empire. Release at the end of 2015.

Dev site: http://www.atthegatesgame.com/info

Check developers gameplay video here!

Vote here: http://www.gog.com/wishlist/games/jon_shafers_at_the_gates
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Machines at War 3
This is a strategy game in the likes of Total Annihalation but with a lot slower gameplay and 2d graphics.

Dev site: http://www.isotope244.com/machines-at-war-3.html

Gameplay video: https://www.youtube.com/watch?v=P7_j_H8kTcI

Vote here: http://www.gog.com/wishlist/games/machines_at_war_3
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Hegemony Rome: The rise of Caesar
Do you wan't to walk in Caesars shoes and figth through the Caesars campaign as written in Commentarii de Bello Gallico by Julius Caesar.

Gameplay video: http://www.youtube.com/watch?v=_h13-V4p3eE

Vote here: http://www.gog.com/wishlist/games/hegemony_rome_the_rise_of_caesar

I hope to see this game on GOG. It's now available on <span class="bold">Steam</span>...

There are more details in <span class="bold">this post</span>  (Community Game: Draw Attention to Underrated Games)

What I really like is that Sillysoft now offers the game on Steam together with American History Lux and Ancient Empires Lux as a bundle.

Hopefully that version will come to gog to in time.