This game has been Greenlit by the Community!

The community has shown their interest in this game. Valve has reached out to this developer to start moving things toward release on Steam.

Greenlight is being retired. For more information on how to submit games to steam, refer to this blog post.
Gem Tower Defense
Genre: Strategy
Platforms: PC, Mac, Linux
Languages: English
Players: Single-player
Jul 26, 2015 @ 1:14pm
Jun 28, 2016 @ 10:41am
Gem TD is a tower defense game based on chance. Start by placing 5 random gems on the board and then pick one. The remaining gems turn into rocks, which are useful for mazing. Each wave, a group of monsters travel to 7 waypoints and then to the end. Your goal is to defeat all these monsters before they reach the end. You can maze around waypoints to increase the time your gems attack monsters. Use your bounty from clearing each wave to upgrade your Gem Chance for placing higher quality gems. Combine these placed gems into more powerful special gems and slates! Special Gems have an assortment of abilities to aid you in different situations. Slates can be moved anywhere and allow you to damage monsters as they get near or walk over them.

Game Modes
  • Damage: Deal the highest damage you can to the final boss. This mode has a mini damage boss after wave 30, with the final damage boss after the wave 50.
  • Timed: Clear all 50 waves in the lowest time possible.
  • Swarm: Deal the most damage to a swarm of 10 final bosses. After wave 8, enemies spawn in larger groups.
  • Survival: Unlike other modes, wave 50 is not the last. Attempt to clear the highest wave possible.

Gem Types:
  • Amethyst: Only attacks air, but with great range.
  • Aquamarine: Attacks very fast, but with a short range.
  • Diamond: Only attacks ground, but has a chance to crit.
  • Emerald: Applies poison, which causes damage over time and slows monsters for a short duration.
  • Opal: Increases attack speed of surrounding gems.
  • Ruby: Does splash damage.
  • Sapphire: Slows monsters for a short duration.
  • Topaz: Attacks all targets in range.

Gem Qualities
Gems have 7 qualities: Chipped, Flawed, Normal, Flawless, Perfect, and Great. Upgrading your Gem Chance can increase the possibility of getting higher quality gems as you place them. Higher quality gems are more powerful than their previous quality. Great gems can only be created if you place 2 Perfect gems and combine them. An ultimate gem can be created if you combine 4 Perfect gems, but this is so rare I shouldn't mention it.

Lucky Chance
After fully upgrading your Gem Chance, an option for a Lucky Chance will unlock. This allows you to pay a nominal fee (from the bounty you collect in-game) to get an extra chance at that Perfect gem you were eyeballing. This is great if you are having trouble getting that last Perfect gem to complete a recipe or you want a better chance at obtaining a Great gem.

Special Gems
Their are 13 different special gem recipes with a total of 31 special gems (including upgrades). These special gems are created by collecting gems listed in their recipe. Don't worry if you are not familiar with these recipes. An in-game recipe book will provide all the information you need.

Their are 12 different slates you can create. Slates can only be created when you place your 5 gems. 8 of these slates are made from a specific Normal and Flawed gems. 4 of these slates are created by combining slates you have already made. Once a slate is created, it can be moved only once to anywhere on the board. Slates do not block the path like gems do, and most of them damage monsters as they walk over.

This game is a reincarnation of the original Gem TD, created by Bryvx. Bryvx has given me permission to create this new, standalone version based off the original game.
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Unknown Hinson Aug 30, 2017 @ 7:23pm 
I'd like to see this.
Zev Dec 25, 2016 @ 2:46pm 
Any updates? I'd love to see this released because I would mod it :)
고대에존재 Dec 2, 2016 @ 12:19am 
SC2 map in asia sever is removed. pls reUpload.
And release this! PLZZZZZ
SSSLeoNoYuusha | DREAMER Dec 1, 2016 @ 12:56pm 
pls release it im so hyped for it and add some cool achievements ! :)
[KC] Sep 19, 2016 @ 7:03am 
Waited... still waiting...
Regal Kain Sep 13, 2016 @ 4:58pm 
So, the game was added, it was greenlit, is it dead? I can't seem to find a website with a forum or anything of that nature.
rezultsmayvary Jun 11, 2016 @ 10:08am 
Alright I've been keeping track of this thread almost since it has started. I've been playing Gem TD since WC3. I redownloaded the game years later just to play this specific game once again. I was stoked when SC2 came out, and when I found Gem TD on it I was blown away. Spent countless more hours on that as well as playing the absolutely pathetic browser version of Gem TD. I seriously hope this game goes through. This Tower Defense has ruined all other Tower Defenses for me and I will pay as much for this as I would for any full game. I would also love if there was a Dev on this that kept updates rolling in once in a while. This is my favorite Tower Defense game of all time and it NEEDS to happen.
星焰 Jun 5, 2016 @ 2:45pm 
I'd wait for it nearly a year! When can I play it?
Darktoad Jun 5, 2016 @ 12:05am 
Yes. I would buy it instantly for up to $10.
Eknight01 Apr 15, 2016 @ 10:22pm 
Perfect < Great? seems odd choice, any chance of the classic WC3 Slates being added to final or even th SC2 map? and extra bosses on SC2 would be great too