v1.2 alpha released!!! This version has a number of improvements:

• Auto-mine is enabled by popular demand! Click and hold to mine.
• You can now mine upwards, by popular demand!
• You can call for rescue if you get stuck down the mine! You'll lose all your gems, though. Click the "Call for rescue" link at the bottom right.
• You can now hover over your backpack icon to show what you're carrying and the total value.
• Your health, pickaxe and battery life will change colors to indicate low values.
• Jewel tooltips now show value as well as weight.
• Introduced particle effects to make mining cooler!
• Improved death message, you can now check out many more stats about your run!
• Tweaked health decrease (now much easier), jewel generation (now more generous) and other parameters.
  

Premise

You are an expert miner who has decided to explore the Dareum mine nearby, a procedurally generated mine. You will try to dig deeper and deeper, while mining precious materials on the way!

Mining is dangerous, so you need to be agile to survive. Your health will decrease in the depths, your headlight will eventually run out of battery and your pickaxe will grow dull. Also, if you don't dig carefully, you can end up trapped forever, having no way to ascend!

Fortunately, a small table/shop is available just outside the mine entrance. Use it to sell your precious jewels and ores to repair your gear, restore your health and upgrade your stuff.

See if you can make it all the way to depth 150, the center of the very Earth! Who knows what cool stuff will you find there?!?

Controls

• By default, WASD to move (A and D to move, W to jump/ascend, S to descend). You can remap these in Options.
• Left mouse button to dig/mine or enter the shop/interact.
• Right mouse button to toggle your headlight on/off (while underground) or exit the shop.
• ESC pauses the game.
• You can use middle mouse button to pan the camera.

Tips and Tricks

1. Be careful how you mine! If you don't think forward, you might get stuck, unable to ascend, and you'll eventually die.
2. If you accidentally get stuck into a shaft three blocks deep, try jumping and digging at the same time, it might just be what you need :D
3. Always keep an eye on your health, battery level and pickaxe sharpness. Try to upgrade your light and pickaxe as soon as possible.
4. The deeper you go, the more health you lose, but the more precious gems and materials you might be able to mine!

Credits

• This game was made all by myself, for Ludum Dare 48 Compo, in 48 hours. I created all art (Aseprite), programming (Gamemaker Studio 2.3), sounds (bfxr + my Roland piano + Audacity) and music (I composed and played both songs in my Roland piano).
• I used my existing template for new projects (also created by me), as well as the string formatting library I created (TypeFormatted).
• I used the free JujuAdams's Bulb library for the lighting effects, available here: https://github.com/JujuAdams/Bulb
• Fonts used downloaded from:
• "No Virus":  https://www.dafont.com/no-virus.font
  "Poetsen One": https://www.dafont.com/poetsen-one.font
• Source code (Bitbucket repository): https://bitbucket.org/biyectivo/ld48/src/master/

Extra

I will reward the first player to post a screenshot in the comments who has found the cool stuff lying in the final depth of the Earth. No cheating by modding the code!!!