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Maze, combine and conquer in Gem Miner TD, an indie tower defense game that puts you in the role of a crafty miner tasked with creating deadly mazes, combining powerful gems, and surviving waves of relentless enemies. With unique roguelike elements, every playthrough is a new adventure filled with strategic decisions and dazzling chaos.

Demo Features

Demo packs quite a lot of content. We are experimenting with using a demo/trial hybrid. More content than usual for a demo, but progression is slightly slower. Your save file carries over to the full game!

• Get a taste of the action with access to Tutorial and 21 waves from the first two maps!

• Two playable miners, each with unique mechanics and unlockables.

• Experiment with over 30 unique gems, representing about 30% of the full roster, including core starting gems and early-tier merges.

• Over 20 powerful augments to customize your strategy.

• A variety of unique enemy types to challenge your defenses.

Your progress carries over! The same save is used for both the Demo and Full version. This demo offers a streamlined version of the full experience, giving you a solid look at the core gameplay. The full game will feature multiple maps, significantly expanded gem selection, numerous miners with meta-progression, dozens of additional augments and expanded mechanics.

Maze, combine and conquer

• Craft Your Maze - Mine and place blocks to create intricate paths. Adjacent blocks become ore, transformable into powerful defensive gems.

• Strategic Defense - Place gems to shoot down waves of enemies as they attempt to drag your miner to the lava.

• Merge System - Merge gems of varying rarities to create increasingly powerful defenses. The more you combine, the mightier your defenses become!

• Roguelike Elements - After every 5 waves, choose from roguelike-style upgrades to customize your playstyle. Enhance your gems, empower your miner, or alter gameplay mechanics for a unique experience every run.

Colorful pixel graphics, deep strategy, and endless replayability await. Easy to play, hard to master! Try the demo and wishlist now!

Demo supports mouse and keyboard, gamepads, Steam Deck, touchscreen, and different resolutions including resizable window support. Demo is only available in English.